Mercurial > hg > CbC > CbC_llvm

diff test/Transforms/InstCombine/sub.ll @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 1172e4bd9c6f
children 3a76565eade5
line wrap: on
line diff
--- a/test/Transforms/InstCombine/sub.ll	Fri Nov 25 19:14:25 2016 +0900
+++ b/test/Transforms/InstCombine/sub.ll	Fri Oct 27 17:07:41 2017 +0900
@@ -15,7 +15,7 @@
 
 define i32 @test2(i32 %A) {
 ; CHECK-LABEL: @test2(
-; CHECK-NEXT:    ret i32 %A
+; CHECK-NEXT:    ret i32 [[A:%.*]]
 ;
   %B = sub i32 %A, 0
   ret i32 %B
@@ -23,7 +23,7 @@
 
 define i32 @test3(i32 %A) {
 ; CHECK-LABEL: @test3(
-; CHECK-NEXT:    ret i32 %A
+; CHECK-NEXT:    ret i32 [[A:%.*]]
 ;
   %B = sub i32 0, %A
   %C = sub i32 0, %B
@@ -32,7 +32,7 @@
 
 define i32 @test4(i32 %A, i32 %x) {
 ; CHECK-LABEL: @test4(
-; CHECK-NEXT:    [[C:%.*]] = add i32 %x, %A
+; CHECK-NEXT:    [[C:%.*]] = add i32 [[X:%.*]], [[A:%.*]]
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = sub i32 0, %A
@@ -42,8 +42,8 @@
 
 define i32 @test5(i32 %A, i32 %B, i32 %C) {
 ; CHECK-LABEL: @test5(
-; CHECK-NEXT:    [[D1:%.*]] = sub i32 %C, %B
-; CHECK-NEXT:    [[E:%.*]] = add i32 [[D1]], %A
+; CHECK-NEXT:    [[D1:%.*]] = sub i32 [[C:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[E:%.*]] = add i32 [[D1]], [[A:%.*]]
 ; CHECK-NEXT:    ret i32 [[E]]
 ;
   %D = sub i32 %B, %C
@@ -53,8 +53,8 @@
 
 define i32 @test6(i32 %A, i32 %B) {
 ; CHECK-LABEL: @test6(
-; CHECK-NEXT:    [[B_NOT:%.*]] = xor i32 %B, -1
-; CHECK-NEXT:    [[D:%.*]] = and i32 %A, [[B_NOT]]
+; CHECK-NEXT:    [[B_NOT:%.*]] = xor i32 [[B:%.*]], -1
+; CHECK-NEXT:    [[D:%.*]] = and i32 [[B_NOT]], [[A:%.*]]
 ; CHECK-NEXT:    ret i32 [[D]]
 ;
   %C = and i32 %A, %B
@@ -62,9 +62,20 @@
   ret i32 %D
 }
 
+define i32 @test6commuted(i32 %A, i32 %B) {
+; CHECK-LABEL: @test6commuted(
+; CHECK-NEXT:    [[B_NOT:%.*]] = xor i32 [[B:%.*]], -1
+; CHECK-NEXT:    [[D:%.*]] = and i32 [[B_NOT]], [[A:%.*]]
+; CHECK-NEXT:    ret i32 [[D]]
+;
+  %C = and i32 %B, %A
+  %D = sub i32 %A, %C
+  ret i32 %D
+}
+
 define i32 @test7(i32 %A) {
 ; CHECK-LABEL: @test7(
-; CHECK-NEXT:    [[B:%.*]] = xor i32 %A, -1
+; CHECK-NEXT:    [[B:%.*]] = xor i32 [[A:%.*]], -1
 ; CHECK-NEXT:    ret i32 [[B]]
 ;
   %B = sub i32 -1, %A
@@ -73,7 +84,7 @@
 
 define i32 @test8(i32 %A) {
 ; CHECK-LABEL: @test8(
-; CHECK-NEXT:    [[C:%.*]] = shl i32 %A, 3
+; CHECK-NEXT:    [[C:%.*]] = shl i32 [[A:%.*]], 3
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = mul i32 9, %A
@@ -83,7 +94,7 @@
 
 define i32 @test9(i32 %A) {
 ; CHECK-LABEL: @test9(
-; CHECK-NEXT:    [[C:%.*]] = mul i32 %A, -2
+; CHECK-NEXT:    [[C:%.*]] = mul i32 [[A:%.*]], -2
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = mul i32 3, %A
@@ -93,7 +104,7 @@
 
 define i32 @test10(i32 %A, i32 %B) {
 ; CHECK-LABEL: @test10(
-; CHECK-NEXT:    [[E:%.*]] = mul i32 %A, %B
+; CHECK-NEXT:    [[E:%.*]] = mul i32 [[A:%.*]], [[B:%.*]]
 ; CHECK-NEXT:    ret i32 [[E]]
 ;
   %C = sub i32 0, %A
@@ -104,7 +115,7 @@
 
 define i32 @test10a(i32 %A) {
 ; CHECK-LABEL: @test10a(
-; CHECK-NEXT:    [[E:%.*]] = mul i32 %A, -7
+; CHECK-NEXT:    [[E:%.*]] = mul i32 [[A:%.*]], -7
 ; CHECK-NEXT:    ret i32 [[E]]
 ;
   %C = sub i32 0, %A
@@ -114,7 +125,7 @@
 
 define i1 @test11(i8 %A, i8 %B) {
 ; CHECK-LABEL: @test11(
-; CHECK-NEXT:    [[D:%.*]] = icmp ne i8 %A, %B
+; CHECK-NEXT:    [[D:%.*]] = icmp ne i8 [[A:%.*]], [[B:%.*]]
 ; CHECK-NEXT:    ret i1 [[D]]
 ;
   %C = sub i8 %A, %B
@@ -124,7 +135,7 @@
 
 define <2 x i1> @test11vec(<2 x i8> %A, <2 x i8> %B) {
 ; CHECK-LABEL: @test11vec(
-; CHECK-NEXT:    [[D:%.*]] = icmp ne <2 x i8> %A, %B
+; CHECK-NEXT:    [[D:%.*]] = icmp ne <2 x i8> [[A:%.*]], [[B:%.*]]
 ; CHECK-NEXT:    ret <2 x i1> [[D]]
 ;
   %C = sub <2 x i8> %A, %B
@@ -134,7 +145,7 @@
 
 define i32 @test12(i32 %A) {
 ; CHECK-LABEL: @test12(
-; CHECK-NEXT:    [[C:%.*]] = lshr i32 %A, 31
+; CHECK-NEXT:    [[C:%.*]] = lshr i32 [[A:%.*]], 31
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = ashr i32 %A, 31
@@ -144,7 +155,7 @@
 
 define i32 @test13(i32 %A) {
 ; CHECK-LABEL: @test13(
-; CHECK-NEXT:    [[C:%.*]] = ashr i32 %A, 31
+; CHECK-NEXT:    [[C:%.*]] = ashr i32 [[A:%.*]], 31
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = lshr i32 %A, 31
@@ -154,7 +165,7 @@
 
 define <2 x i32> @test12vec(<2 x i32> %A) {
 ; CHECK-LABEL: @test12vec(
-; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i32> %A, <i32 31, i32 31>
+; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i32> [[A:%.*]], <i32 31, i32 31>
 ; CHECK-NEXT:    ret <2 x i32> [[C]]
 ;
   %B = ashr <2 x i32> %A, <i32 31, i32 31>
@@ -164,7 +175,7 @@
 
 define <2 x i32> @test13vec(<2 x i32> %A) {
 ; CHECK-LABEL: @test13vec(
-; CHECK-NEXT:    [[C:%.*]] = ashr <2 x i32> %A, <i32 31, i32 31>
+; CHECK-NEXT:    [[C:%.*]] = ashr <2 x i32> [[A:%.*]], <i32 31, i32 31>
 ; CHECK-NEXT:    ret <2 x i32> [[C]]
 ;
   %B = lshr <2 x i32> %A, <i32 31, i32 31>
@@ -174,8 +185,8 @@
 
 define i32 @test15(i32 %A, i32 %B) {
 ; CHECK-LABEL: @test15(
-; CHECK-NEXT:    [[C:%.*]] = sub i32 0, %A
-; CHECK-NEXT:    [[D:%.*]] = srem i32 %B, [[C]]
+; CHECK-NEXT:    [[C:%.*]] = sub i32 0, [[A:%.*]]
+; CHECK-NEXT:    [[D:%.*]] = srem i32 [[B:%.*]], [[C]]
 ; CHECK-NEXT:    ret i32 [[D]]
 ;
   %C = sub i32 0, %A
@@ -185,7 +196,7 @@
 
 define i32 @test16(i32 %A) {
 ; CHECK-LABEL: @test16(
-; CHECK-NEXT:    [[Y:%.*]] = sdiv i32 %A, -1123
+; CHECK-NEXT:    [[Y:%.*]] = sdiv i32 [[A:%.*]], -1123
 ; CHECK-NEXT:    ret i32 [[Y]]
 ;
   %X = sdiv i32 %A, 1123
@@ -197,7 +208,7 @@
 ; PR3142
 define i32 @test17(i32 %A) {
 ; CHECK-LABEL: @test17(
-; CHECK-NEXT:    [[B:%.*]] = sub i32 0, %A
+; CHECK-NEXT:    [[B:%.*]] = sub i32 0, [[A:%.*]]
 ; CHECK-NEXT:    [[C:%.*]] = sdiv i32 [[B]], 1234
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
@@ -218,7 +229,7 @@
 
 define i32 @test19(i32 %X, i32 %Y) {
 ; CHECK-LABEL: @test19(
-; CHECK-NEXT:    ret i32 %X
+; CHECK-NEXT:    ret i32 [[X:%.*]]
 ;
   %Z = sub i32 %X, %Y
   %Q = add i32 %Z, %Y
@@ -227,7 +238,7 @@
 
 define i1 @test20(i32 %g, i32 %h) {
 ; CHECK-LABEL: @test20(
-; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 %h, 0
+; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 [[H:%.*]], 0
 ; CHECK-NEXT:    ret i1 [[TMP_4]]
 ;
   %tmp.2 = sub i32 %g, %h
@@ -237,7 +248,7 @@
 
 define i1 @test21(i32 %g, i32 %h) {
 ; CHECK-LABEL: @test21(
-; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 %h, 0
+; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 [[H:%.*]], 0
 ; CHECK-NEXT:    ret i1 [[TMP_4]]
 ;
   %tmp.2 = sub i32 %g, %h
@@ -248,7 +259,7 @@
 ; PR2298
 define zeroext i1 @test22(i32 %a, i32 %b)  nounwind  {
 ; CHECK-LABEL: @test22(
-; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq i32 %b, %a
+; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq i32 [[B:%.*]], [[A:%.*]]
 ; CHECK-NEXT:    ret i1 [[TMP5]]
 ;
   %tmp2 = sub i32 0, %a
@@ -260,7 +271,7 @@
 ; rdar://7362831
 define i32 @test23(i8* %P, i64 %A){
 ; CHECK-LABEL: @test23(
-; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i32
+; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 [[A:%.*]] to i32
 ; CHECK-NEXT:    ret i32 [[TMP1]]
 ;
   %B = getelementptr inbounds i8, i8* %P, i64 %A
@@ -274,7 +285,7 @@
 
 define i8 @test23_as1(i8 addrspace(1)* %P, i16 %A) {
 ; CHECK-LABEL: @test23_as1(
-; CHECK-NEXT:    [[TMP1:%.*]] = trunc i16 %A to i8
+; CHECK-NEXT:    [[TMP1:%.*]] = trunc i16 [[A:%.*]] to i8
 ; CHECK-NEXT:    ret i8 [[TMP1]]
 ;
   %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
@@ -288,7 +299,7 @@
 
 define i64 @test24(i8* %P, i64 %A){
 ; CHECK-LABEL: @test24(
-; CHECK-NEXT:    ret i64 %A
+; CHECK-NEXT:    ret i64 [[A:%.*]]
 ;
   %B = getelementptr inbounds i8, i8* %P, i64 %A
   %C = ptrtoint i8* %B to i64
@@ -299,7 +310,7 @@
 
 define i16 @test24_as1(i8 addrspace(1)* %P, i16 %A) {
 ; CHECK-LABEL: @test24_as1(
-; CHECK-NEXT:    ret i16 %A
+; CHECK-NEXT:    ret i16 [[A:%.*]]
 ;
   %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
   %C = ptrtoint i8 addrspace(1)* %B to i16
@@ -310,7 +321,7 @@
 
 define i64 @test24a(i8* %P, i64 %A){
 ; CHECK-LABEL: @test24a(
-; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i64 0, %A
+; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i64 0, [[A:%.*]]
 ; CHECK-NEXT:    ret i64 [[DIFF_NEG]]
 ;
   %B = getelementptr inbounds i8, i8* %P, i64 %A
@@ -322,7 +333,7 @@
 
 define i16 @test24a_as1(i8 addrspace(1)* %P, i16 %A) {
 ; CHECK-LABEL: @test24a_as1(
-; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i16 0, %A
+; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i16 0, [[A:%.*]]
 ; CHECK-NEXT:    ret i16 [[DIFF_NEG]]
 ;
   %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
@@ -337,7 +348,7 @@
 
 define i64 @test24b(i8* %P, i64 %A){
 ; CHECK-LABEL: @test24b(
-; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 %A, 1
+; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 [[A:%.*]], 1
 ; CHECK-NEXT:    ret i64 [[B_IDX]]
 ;
   %B = getelementptr inbounds [42 x i16], [42 x i16]* @Arr, i64 0, i64 %A
@@ -349,7 +360,7 @@
 
 define i64 @test25(i8* %P, i64 %A){
 ; CHECK-LABEL: @test25(
-; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 %A, 1
+; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 [[A:%.*]], 1
 ; CHECK-NEXT:    [[TMP1:%.*]] = add i64 [[B_IDX]], -84
 ; CHECK-NEXT:    ret i64 [[TMP1]]
 ;
@@ -363,7 +374,7 @@
 
 define i16 @test25_as1(i8 addrspace(1)* %P, i64 %A) {
 ; CHECK-LABEL: @test25_as1(
-; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i16
+; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 [[A:%.*]] to i16
 ; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i16 [[TMP1]], 1
 ; CHECK-NEXT:    [[TMP2:%.*]] = add i16 [[B_IDX]], -84
 ; CHECK-NEXT:    ret i16 [[TMP2]]
@@ -376,7 +387,7 @@
 
 define i32 @test26(i32 %x) {
 ; CHECK-LABEL: @test26(
-; CHECK-NEXT:    [[NEG:%.*]] = shl i32 -3, %x
+; CHECK-NEXT:    [[NEG:%.*]] = shl i32 -3, [[X:%.*]]
 ; CHECK-NEXT:    ret i32 [[NEG]]
 ;
   %shl = shl i32 3, %x
@@ -386,8 +397,8 @@
 
 define i32 @test27(i32 %x, i32 %y) {
 ; CHECK-LABEL: @test27(
-; CHECK-NEXT:    [[TMP1:%.*]] = shl i32 %y, 3
-; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = shl i32 [[Y:%.*]], 3
+; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %mul = mul i32 %y, -8
@@ -395,10 +406,87 @@
   ret i32 %sub
 }
 
+define <2 x i32> @test27vec(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27vec(
+; CHECK-NEXT:    [[TMP1:%.*]] = mul <2 x i32> [[Y:%.*]], <i32 8, i32 6>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> %y, <i32 -8, i32 -6>
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
+define <2 x i32> @test27vecsplat(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27vecsplat(
+; CHECK-NEXT:    [[TMP1:%.*]] = shl <2 x i32> [[Y:%.*]], <i32 3, i32 3>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> %y, <i32 -8, i32 -8>
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
+define <2 x i32> @test27vecmixed(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27vecmixed(
+; CHECK-NEXT:    [[TMP1:%.*]] = mul <2 x i32> [[Y:%.*]], <i32 8, i32 -8>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> %y, <i32 -8, i32 8>
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
+define i32 @test27commuted(i32 %x, i32 %y) {
+; CHECK-LABEL: @test27commuted(
+; CHECK-NEXT:    [[TMP1:%.*]] = shl i32 [[Y:%.*]], 3
+; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
+  %mul = mul i32 -8, %y
+  %sub = sub i32 %x, %mul
+  ret i32 %sub
+}
+
+define <2 x i32> @test27commutedvec(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27commutedvec(
+; CHECK-NEXT:    [[TMP1:%.*]] = mul <2 x i32> [[Y:%.*]], <i32 8, i32 6>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> <i32 -8, i32 -6>, %y
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
+define <2 x i32> @test27commutedvecsplat(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27commutedvecsplat(
+; CHECK-NEXT:    [[TMP1:%.*]] = shl <2 x i32> [[Y:%.*]], <i32 3, i32 3>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> <i32 -8, i32 -8>, %y
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
+define <2 x i32> @test27commutedvecmixed(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: @test27commutedvecmixed(
+; CHECK-NEXT:    [[TMP1:%.*]] = mul <2 x i32> [[Y:%.*]], <i32 8, i32 -8>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i32> [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret <2 x i32> [[SUB]]
+;
+  %mul = mul <2 x i32> <i32 -8, i32 8>, %y
+  %sub = sub <2 x i32> %x, %mul
+  ret <2 x i32> %sub
+}
+
 define i32 @test28(i32 %x, i32 %y, i32 %z) {
 ; CHECK-LABEL: @test28(
-; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 %z, %y
-; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 [[Z:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %neg = sub i32 0, %z
@@ -407,9 +495,21 @@
   ret i32 %sub
 }
 
+define i32 @test28commuted(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @test28commuted(
+; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 [[Y:%.*]], [[Z:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
+  %neg = sub i32 0, %z
+  %mul = mul i32 %y, %neg
+  %sub = sub i32 %x, %mul
+  ret i32 %sub
+}
+
 define i64 @test29(i8* %foo, i64 %i, i64 %j) {
 ; CHECK-LABEL: @test29(
-; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 %i, %j
+; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[I:%.*]], [[J:%.*]]
 ; CHECK-NEXT:    ret i64 [[TMP1]]
 ;
   %gep1 = getelementptr inbounds i8, i8* %foo, i64 %i
@@ -422,8 +522,8 @@
 
 define i64 @test30(i8* %foo, i64 %i, i64 %j) {
 ; CHECK-LABEL: @test30(
-; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i64 %i, 2
-; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[GEP1_IDX]], %j
+; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i64 [[I:%.*]], 2
+; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[GEP1_IDX]], [[J:%.*]]
 ; CHECK-NEXT:    ret i64 [[TMP1]]
 ;
   %bit = bitcast i8* %foo to i32*
@@ -437,8 +537,8 @@
 
 define i16 @test30_as1(i8 addrspace(1)* %foo, i16 %i, i16 %j) {
 ; CHECK-LABEL: @test30_as1(
-; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i16 %i, 2
-; CHECK-NEXT:    [[TMP1:%.*]] = sub i16 [[GEP1_IDX]], %j
+; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i16 [[I:%.*]], 2
+; CHECK-NEXT:    [[TMP1:%.*]] = sub i16 [[GEP1_IDX]], [[J:%.*]]
 ; CHECK-NEXT:    ret i16 [[TMP1]]
 ;
   %bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
@@ -452,7 +552,7 @@
 
 define <2 x i64> @test31(<2 x i64> %A) {
 ; CHECK-LABEL: @test31(
-; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i64> %A, <i64 3, i64 4>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i64> [[A:%.*]], <i64 3, i64 4>
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %xor = xor <2 x i64> %A, <i64 -1, i64 -1>
@@ -462,7 +562,7 @@
 
 define <2 x i64> @test32(<2 x i64> %A) {
 ; CHECK-LABEL: @test32(
-; CHECK-NEXT:    [[SUB:%.*]] = sub <2 x i64> <i64 3, i64 4>, %A
+; CHECK-NEXT:    [[SUB:%.*]] = sub <2 x i64> <i64 3, i64 4>, [[A:%.*]]
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %add = add <2 x i64> %A, <i64 -1, i64 -1>
@@ -472,7 +572,7 @@
 
 define <2 x i64> @test33(<2 x i1> %A) {
 ; CHECK-LABEL: @test33(
-; CHECK-NEXT:    [[SUB:%.*]] = sext <2 x i1> %A to <2 x i64>
+; CHECK-NEXT:    [[SUB:%.*]] = sext <2 x i1> [[A:%.*]] to <2 x i64>
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %ext = zext <2 x i1> %A to <2 x i64>
@@ -482,7 +582,7 @@
 
 define <2 x i64> @test34(<2 x i1> %A) {
 ; CHECK-LABEL: @test34(
-; CHECK-NEXT:    [[SUB:%.*]] = zext <2 x i1> %A to <2 x i64>
+; CHECK-NEXT:    [[SUB:%.*]] = zext <2 x i1> [[A:%.*]] to <2 x i64>
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %ext = sext <2 x i1> %A to <2 x i64>
@@ -492,7 +592,7 @@
 
 define <2 x i64> @test35(<2 x i64> %A) {
 ; CHECK-LABEL: @test35(
-; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> %A, <i64 -2, i64 -3>
+; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> [[A:%.*]], <i64 -2, i64 -3>
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %mul = mul <2 x i64> %A, <i64 3, i64 4>
@@ -502,7 +602,7 @@
 
 define <2 x i64> @test36(<2 x i64> %A) {
 ; CHECK-LABEL: @test36(
-; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> %A, <i64 7, i64 15>
+; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> [[A:%.*]], <i64 7, i64 15>
 ; CHECK-NEXT:    ret <2 x i64> [[SUB]]
 ;
   %shl = shl <2 x i64> %A, <i64 3, i64 4>
@@ -512,7 +612,7 @@
 
 define <2 x i32> @test37(<2 x i32> %A) {
 ; CHECK-LABEL: @test37(
-; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq <2 x i32> %A, <i32 -2147483648, i32 -2147483648>
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq <2 x i32> [[A:%.*]], <i32 -2147483648, i32 -2147483648>
 ; CHECK-NEXT:    [[SUB:%.*]] = sext <2 x i1> [[TMP1]] to <2 x i32>
 ; CHECK-NEXT:    ret <2 x i32> [[SUB]]
 ;
@@ -523,7 +623,7 @@
 
 define i32 @test38(i32 %A) {
 ; CHECK-LABEL: @test38(
-; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i32 %A, -2147483648
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i32 [[A:%.*]], -2147483648
 ; CHECK-NEXT:    [[SUB:%.*]] = sext i1 [[TMP1]] to i32
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
@@ -534,7 +634,7 @@
 
 define i32 @test39(i32 %A, i32 %x) {
 ; CHECK-LABEL: @test39(
-; CHECK-NEXT:    [[C:%.*]] = add i32 %x, %A
+; CHECK-NEXT:    [[C:%.*]] = add i32 [[X:%.*]], [[A:%.*]]
 ; CHECK-NEXT:    ret i32 [[C]]
 ;
   %B = sub i32 0, %A
@@ -544,8 +644,8 @@
 
 define i16 @test40(i16 %a, i16 %b) {
 ; CHECK-LABEL: @test40(
-; CHECK-NEXT:    [[ASHR:%.*]] = ashr i16 %a, 1
-; CHECK-NEXT:    [[ASHR1:%.*]] = ashr i16 %b, 1
+; CHECK-NEXT:    [[ASHR:%.*]] = ashr i16 [[A:%.*]], 1
+; CHECK-NEXT:    [[ASHR1:%.*]] = ashr i16 [[B:%.*]], 1
 ; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i16 [[ASHR]], [[ASHR1]]
 ; CHECK-NEXT:    ret i16 [[SUB]]
 ;
@@ -557,8 +657,8 @@
 
 define i32 @test41(i16 %a, i16 %b) {
 ; CHECK-LABEL: @test41(
-; CHECK-NEXT:    [[CONV:%.*]] = sext i16 %a to i32
-; CHECK-NEXT:    [[CONV1:%.*]] = sext i16 %b to i32
+; CHECK-NEXT:    [[CONV:%.*]] = sext i16 [[A:%.*]] to i32
+; CHECK-NEXT:    [[CONV1:%.*]] = sext i16 [[B:%.*]] to i32
 ; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i32 [[CONV]], [[CONV1]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
@@ -570,8 +670,8 @@
 
 define i4 @test42(i4 %x, i4 %y) {
 ; CHECK-LABEL: @test42(
-; CHECK-NEXT:    [[A:%.*]] = and i4 %y, 7
-; CHECK-NEXT:    [[B:%.*]] = and i4 %x, 7
+; CHECK-NEXT:    [[A:%.*]] = and i4 [[Y:%.*]], 7
+; CHECK-NEXT:    [[B:%.*]] = and i4 [[X:%.*]], 7
 ; CHECK-NEXT:    [[C:%.*]] = sub nsw i4 [[A]], [[B]]
 ; CHECK-NEXT:    ret i4 [[C]]
 ;
@@ -583,8 +683,8 @@
 
 define i4 @test43(i4 %x, i4 %y) {
 ; CHECK-LABEL: @test43(
-; CHECK-NEXT:    [[A:%.*]] = or i4 %x, -8
-; CHECK-NEXT:    [[B:%.*]] = and i4 %y, 7
+; CHECK-NEXT:    [[A:%.*]] = or i4 [[X:%.*]], -8
+; CHECK-NEXT:    [[B:%.*]] = and i4 [[Y:%.*]], 7
 ; CHECK-NEXT:    [[C:%.*]] = sub nuw i4 [[A]], [[B]]
 ; CHECK-NEXT:    ret i4 [[C]]
 ;
@@ -596,7 +696,7 @@
 
 define i32 @test44(i32 %x) {
 ; CHECK-LABEL: @test44(
-; CHECK-NEXT:    [[SUB:%.*]] = add nsw i32 %x, -32768
+; CHECK-NEXT:    [[SUB:%.*]] = add nsw i32 [[X:%.*]], -32768
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %sub = sub nsw i32 %x, 32768
@@ -605,7 +705,7 @@
 
 define i32 @test45(i32 %x, i32 %y) {
 ; CHECK-LABEL: @test45(
-; CHECK-NEXT:    [[SUB:%.*]] = and i32 %x, %y
+; CHECK-NEXT:    [[SUB:%.*]] = and i32 [[X:%.*]], [[Y:%.*]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %or = or i32 %x, %y
@@ -614,10 +714,21 @@
   ret i32 %sub
 }
 
+define i32 @test45commuted(i32 %x, i32 %y) {
+; CHECK-LABEL: @test45commuted(
+; CHECK-NEXT:    [[SUB:%.*]] = and i32 [[Y:%.*]], [[X:%.*]]
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
+  %or = or i32 %x, %y
+  %xor = xor i32 %y, %x
+  %sub = sub i32 %or, %xor
+  ret i32 %sub
+}
+
 define i32 @test46(i32 %x, i32 %y) {
 ; CHECK-LABEL: @test46(
-; CHECK-NEXT:    [[X_NOT:%.*]] = xor i32 %x, -1
-; CHECK-NEXT:    [[SUB:%.*]] = and i32 %y, [[X_NOT]]
+; CHECK-NEXT:    [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1
+; CHECK-NEXT:    [[SUB:%.*]] = and i32 [[X_NOT]], [[Y:%.*]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %or = or i32 %x, %y
@@ -625,10 +736,21 @@
   ret i32 %sub
 }
 
+define i32 @test46commuted(i32 %x, i32 %y) {
+; CHECK-LABEL: @test46commuted(
+; CHECK-NEXT:    [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1
+; CHECK-NEXT:    [[SUB:%.*]] = and i32 [[X_NOT]], [[Y:%.*]]
+; CHECK-NEXT:    ret i32 [[SUB]]
+;
+  %or = or i32 %y, %x
+  %sub = sub i32 %or, %x
+  ret i32 %sub
+}
+
 define i32 @test47(i1 %A, i32 %B, i32 %C, i32 %D) {
 ; CHECK-LABEL: @test47(
-; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 %D, %C
-; CHECK-NEXT:    [[SUB:%.*]] = select i1 %A, i32 [[TMP1]], i32 0
+; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 [[D:%.*]], [[C:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = select i1 [[A:%.*]], i32 [[TMP1]], i32 0
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %sel0 = select i1 %A, i32 %D, i32 %B
@@ -639,8 +761,8 @@
 
 define i32 @test48(i1 %A, i32 %B, i32 %C, i32 %D) {
 ; CHECK-LABEL: @test48(
-; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 %D, %C
-; CHECK-NEXT:    [[SUB:%.*]] = select i1 %A, i32 0, i32 [[TMP1]]
+; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 [[D:%.*]], [[C:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = select i1 [[A:%.*]], i32 0, i32 [[TMP1]]
 ; CHECK-NEXT:    ret i32 [[SUB]]
 ;
   %sel0 = select i1 %A, i32 %B, i32 %D
@@ -653,8 +775,8 @@
 
 define i8 @bool_sext_sub(i8 %x, i1 %y) {
 ; CHECK-LABEL: @bool_sext_sub(
-; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 %y to i8
-; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 [[Y:%.*]] to i8
+; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret i8 [[SUB]]
 ;
   %sext = sext i1 %y to i8
@@ -666,8 +788,8 @@
 
 define <2 x i8> @bool_sext_sub_vec(<2 x i8> %x, <2 x i1> %y) {
 ; CHECK-LABEL: @bool_sext_sub_vec(
-; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> %y to <2 x i8>
-; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i8> [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8>
+; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i8> [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret <2 x i8> [[SUB]]
 ;
   %sext = sext <2 x i1> %y to <2 x i8>
@@ -679,8 +801,8 @@
 
 define <2 x i8> @bool_sext_sub_vec_nsw(<2 x i8> %x, <2 x i1> %y) {
 ; CHECK-LABEL: @bool_sext_sub_vec_nsw(
-; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> %y to <2 x i8>
-; CHECK-NEXT:    [[SUB:%.*]] = add nsw <2 x i8> [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> [[Y:%.*]] to <2 x i8>
+; CHECK-NEXT:    [[SUB:%.*]] = add nsw <2 x i8> [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret <2 x i8> [[SUB]]
 ;
   %sext = sext <2 x i1> %y to <2 x i8>
@@ -692,8 +814,8 @@
 
 define i8 @bool_sext_sub_nuw(i8 %x, i1 %y) {
 ; CHECK-LABEL: @bool_sext_sub_nuw(
-; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 %y to i8
-; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], %x
+; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 [[Y:%.*]] to i8
+; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], [[X:%.*]]
 ; CHECK-NEXT:    ret i8 [[SUB]]
 ;
   %sext = sext i1 %y to i8
@@ -701,3 +823,294 @@
   ret i8 %sub
 }
 
+define i32 @test49(i32 %X) {
+; CHECK-LABEL: @test49(
+; CHECK-NEXT:    [[SUB:%.*]] = sub i32 1, [[X:%.*]]
+; CHECK-NEXT:    [[RES:%.*]] = and i32 [[SUB]], 64
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %sub = sub i32 129, %X
+  %res = and i32 %sub, 64
+  ret i32 %res
+}
+
+define i32 @test50(i32 %X) {
+; CHECK-LABEL: @test50(
+; CHECK-NEXT:    [[SUB:%.*]] = sub i32 1, [[X:%.*]]
+; CHECK-NEXT:    [[RES:%.*]] = and i32 [[SUB]], 127
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %sub = sub i32 129, %X
+  %res = and i32 %sub, 127
+  ret i32 %res
+}
+
+define i32 @test51(i32 %X) {
+; CHECK-LABEL: @test51(
+; CHECK-NEXT:    [[SUB:%.*]] = sub i32 126, [[X:%.*]]
+; CHECK-NEXT:    [[RES:%.*]] = and i32 [[SUB]], 64
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %sub = sub i32 254, %X
+  %res = and i32 %sub, 64
+  ret i32 %res
+}
+
+define i32 @test52(i32 %X) {
+; CHECK-LABEL: @test52(
+; CHECK-NEXT:    [[SUB:%.*]] = sub i32 126, [[X:%.*]]
+; CHECK-NEXT:    [[RES:%.*]] = and i32 [[SUB]], 127
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %sub = sub i32 254, %X
+  %res = and i32 %sub, 127
+  ret i32 %res
+}
+
+define <2 x i1> @test53(<2 x i1> %A, <2 x i1> %B) {
+; CHECK-LABEL: @test53(
+; CHECK-NEXT:    [[SUB:%.*]] = xor <2 x i1> [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    ret <2 x i1> [[SUB]]
+;
+  %sub = sub <2 x i1> %A, %B
+  ret <2 x i1> %sub
+}
+
+define i32 @test54(i1 %C) {
+; CHECK-LABEL: @test54(
+; CHECK-NEXT:    [[V:%.*]] = select i1 [[C:%.*]], i32 -877, i32 113
+; CHECK-NEXT:    ret i32 [[V]]
+;
+  %A = select i1 %C, i32 1000, i32 10
+  %V = sub i32 123, %A
+  ret i32 %V
+}
+
+define <2 x i32> @test54vec(i1 %C) {
+; CHECK-LABEL: @test54vec(
+; CHECK-NEXT:    [[V:%.*]] = select i1 [[C:%.*]], <2 x i32> <i32 -877, i32 -877>, <2 x i32> <i32 113, i32 113>
+; CHECK-NEXT:    ret <2 x i32> [[V]]
+;
+  %A = select i1 %C, <2 x i32> <i32 1000, i32 1000>, <2 x i32> <i32 10, i32 10>
+  %V = sub <2 x i32> <i32 123, i32 123>, %A
+  ret <2 x i32> %V
+}
+
+define <2 x i32> @test54vec2(i1 %C) {
+; CHECK-LABEL: @test54vec2(
+; CHECK-NEXT:    [[V:%.*]] = select i1 [[C:%.*]], <2 x i32> <i32 -877, i32 -2167>, <2 x i32> <i32 113, i32 303>
+; CHECK-NEXT:    ret <2 x i32> [[V]]
+;
+  %A = select i1 %C, <2 x i32> <i32 1000, i32 2500>, <2 x i32> <i32 10, i32 30>
+  %V = sub <2 x i32> <i32 123, i32 333>, %A
+  ret <2 x i32> %V
+}
+
+define i32 @test55(i1 %which) {
+; CHECK-LABEL: @test55(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[WHICH:%.*]], label [[FINAL:%.*]], label [[DELAY:%.*]]
+; CHECK:       delay:
+; CHECK-NEXT:    br label [[FINAL]]
+; CHECK:       final:
+; CHECK-NEXT:    [[A:%.*]] = phi i32 [ -877, [[ENTRY:%.*]] ], [ 113, [[DELAY]] ]
+; CHECK-NEXT:    ret i32 [[A]]
+;
+entry:
+  br i1 %which, label %final, label %delay
+
+delay:
+  br label %final
+
+final:
+  %A = phi i32 [ 1000, %entry ], [ 10, %delay ]
+  %value = sub i32 123, %A
+  ret i32 %value
+}
+
+define <2 x i32> @test55vec(i1 %which) {
+; CHECK-LABEL: @test55vec(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[WHICH:%.*]], label [[FINAL:%.*]], label [[DELAY:%.*]]
+; CHECK:       delay:
+; CHECK-NEXT:    br label [[FINAL]]
+; CHECK:       final:
+; CHECK-NEXT:    [[A:%.*]] = phi <2 x i32> [ <i32 -877, i32 -877>, [[ENTRY:%.*]] ], [ <i32 113, i32 113>, [[DELAY]] ]
+; CHECK-NEXT:    ret <2 x i32> [[A]]
+;
+entry:
+  br i1 %which, label %final, label %delay
+
+delay:
+  br label %final
+
+final:
+  %A = phi <2 x i32> [ <i32 1000, i32 1000>, %entry ], [ <i32 10, i32 10>, %delay ]
+  %value = sub <2 x i32> <i32 123, i32 123>, %A
+  ret <2 x i32> %value
+}
+
+define <2 x i32> @test55vec2(i1 %which) {
+; CHECK-LABEL: @test55vec2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[WHICH:%.*]], label [[FINAL:%.*]], label [[DELAY:%.*]]
+; CHECK:       delay:
+; CHECK-NEXT:    br label [[FINAL]]
+; CHECK:       final:
+; CHECK-NEXT:    [[A:%.*]] = phi <2 x i32> [ <i32 -877, i32 -2167>, [[ENTRY:%.*]] ], [ <i32 113, i32 303>, [[DELAY]] ]
+; CHECK-NEXT:    ret <2 x i32> [[A]]
+;
+entry:
+  br i1 %which, label %final, label %delay
+
+delay:
+  br label %final
+
+final:
+  %A = phi <2 x i32> [ <i32 1000, i32 2500>, %entry ], [ <i32 10, i32 30>, %delay ]
+  %value = sub <2 x i32> <i32 123, i32 333>, %A
+  ret <2 x i32> %value
+}
+
+define i32 @test56(i32 %A, i32 %B) {
+; CHECK-LABEL: @test56(
+; CHECK-NEXT:    [[Y:%.*]] = sub i32 0, [[B:%.*]]
+; CHECK-NEXT:    ret i32 [[Y]]
+;
+  %X = add i32 %A, %B
+  %Y = sub i32 %A, %X
+  ret i32 %Y                                                                                                                                                                                                                                             }
+
+define i32 @test57(i32 %A, i32 %B) {
+; CHECK-LABEL: @test57(
+; CHECK-NEXT:    [[Y:%.*]] = sub i32 0, [[B:%.*]]
+; CHECK-NEXT:    ret i32 [[Y]]
+;
+  %X = add i32 %B, %A
+  %Y = sub i32 %A, %X
+  ret i32 %Y                                                                                                                                                                                                                                             }
+
+@dummy_global1 = external global i8*
+@dummy_global2 = external global i8*
+
+define i64 @test58([100 x [100 x i8]]* %foo, i64 %i, i64 %j) {
+; CHECK-LABEL: @test58(
+; CHECK-NEXT:    [[TMP1:%.*]] = add i64 [[J:%.*]], 4200
+; CHECK-NEXT:    [[TMP2:%.*]] = add i64 [[I:%.*]], 4200
+; CHECK-NEXT:    [[TMP3:%.*]] = sub i64 [[TMP2:%.*]] [[TMP1:%.*]]
+; CHECK-NEXT:    ret i64 [[TMP3]]
+;
+; Note the reassociate pass and another instcombine pass will further optimize this to
+; "%sub = i64 %i, %j, ret i64 %sub"
+;
+; gep1 and gep2 have only one use
+  %gep1 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 %i
+  %gep2 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 %j
+  %cast1 = ptrtoint i8* %gep1 to i64
+  %cast2 = ptrtoint i8* %gep2 to i64
+  %sub = sub i64 %cast1, %cast2
+  ret i64 %sub
+}
+
+define i64 @test59([100 x [100 x i8]]* %foo, i64 %i) {
+; CHECK-LABEL: @test59(
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 %i
+; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+; CHECK-NEXT:    store i8* [[GEP1]], i8** @dummy_global1, align 8
+; CHECK-NEXT:    store i8* [[GEP2]], i8** @dummy_global2, align 8
+; CHECK-NEXT:    ret i64 %i
+;
+; gep1 and gep2 have more than one uses
+  %gep1 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 %i
+  %gep2 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+  %cast1 = ptrtoint i8* %gep1 to i64
+  %cast2 = ptrtoint i8* %gep2 to i64
+  %sub = sub i64 %cast1, %cast2
+  store i8* %gep1, i8** @dummy_global1
+  store i8* %gep2, i8** @dummy_global2
+  ret i64 %sub
+}
+
+define i64 @test60([100 x [100 x i8]]* %foo, i64 %i, i64 %j) {
+; CHECK-LABEL: @test60(
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 %j, i64 %i
+; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+; CHECK-NEXT:    [[CAST1:%.*]] = ptrtoint i8* [[GEP1]] to i64
+; CHECK-NEXT:    [[CAST2:%.*]] = ptrtoint i8* [[GEP2]] to i64
+; CHECK-NEXT:    [[SUB:%.*]] = sub i64 [[CAST1]], [[CAST2]]
+; CHECK-NEXT:    store i8* [[GEP1]], i8** @dummy_global1, align 8
+; CHECK-NEXT:    ret i64 [[SUB]]
+;
+; gep1 has a non-constant index and more than one uses. Shouldn't duplicate the arithmetic.
+  %gep1 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 %j, i64 %i
+  %gep2 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+  %cast1 = ptrtoint i8* %gep1 to i64
+  %cast2 = ptrtoint i8* %gep2 to i64
+  %sub = sub i64 %cast1, %cast2
+  store i8* %gep1, i8** @dummy_global1
+  ret i64 %sub
+}
+
+define i64 @test61([100 x [100 x i8]]* %foo, i64 %i, i64 %j) {
+; CHECK-LABEL: @test61(
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 %j, i64 %i
+; CHECK-NEXT:    [[CAST1:%.*]] = ptrtoint i8* [[GEP1]] to i64
+; CHECK-NEXT:    [[CAST2:%.*]] = ptrtoint i8* [[GEP2]] to i64
+; CHECK-NEXT:    [[SUB:%.*]] = sub i64 [[CAST1]], [[CAST2]]
+; CHECK-NEXT:    store i8* [[GEP2]], i8** @dummy_global2, align 8
+; CHECK-NEXT:    ret i64 [[SUB]]
+;
+; gep2 has a non-constant index and more than one uses. Shouldn't duplicate the arithmetic.
+  %gep1 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 42, i64 0
+  %gep2 = getelementptr inbounds [100 x [100 x i8]], [100 x [100 x i8]]* %foo, i64 0, i64 %j, i64 %i
+  %cast1 = ptrtoint i8* %gep1 to i64
+  %cast2 = ptrtoint i8* %gep2 to i64
+  %sub = sub i64 %cast1, %cast2
+  store i8* %gep2, i8** @dummy_global2
+  ret i64 %sub
+}
+
+define i32 @test62(i32 %A) {
+; CHECK-LABEL: @test62(
+; CHECK-NEXT:    [[B:%.*]] = shl i32 [[A:%.*]], 1
+; CHECK-NEXT:    [[C:%.*]] = sub i32 2, [[B]]
+; CHECK-NEXT:    ret i32 [[C]]
+;
+  %B = sub i32 1, %A
+  %C = shl i32 %B, 1
+  ret i32 %C
+}
+
+define <2 x i32> @test62vec(<2 x i32> %A) {
+; CHECK-LABEL: @test62vec(
+; CHECK-NEXT:    [[B:%.*]] = shl <2 x i32> [[A:%.*]], <i32 1, i32 1>
+; CHECK-NEXT:    [[C:%.*]] = sub <2 x i32> <i32 2, i32 2>, [[B]]
+; CHECK-NEXT:    ret <2 x i32> [[C]]
+;
+  %B = sub <2 x i32> <i32 1, i32 1>, %A
+  %C = shl <2 x i32> %B, <i32 1, i32 1>
+  ret <2 x i32> %C
+}
+
+define i32 @test63(i32 %A) {
+; CHECK-LABEL: @test63(
+; CHECK-NEXT:    [[B:%.*]] = shl i32 [[A:%.*]], 1
+; CHECK-NEXT:    ret i32 [[B]]
+;
+  %B = sub i32 1, %A
+  %C = shl i32 %B, 1
+  %D = sub i32 2, %C
+  ret i32 %D
+}
+
+define <2 x i32> @test63vec(<2 x i32> %A) {
+; CHECK-LABEL: @test63vec(
+; CHECK-NEXT:    [[B:%.*]] = shl <2 x i32> [[A:%.*]], <i32 1, i32 1>
+; CHECK-NEXT:    ret <2 x i32> [[B]]
+;
+  %B = sub <2 x i32> <i32 1, i32 1>, %A
+  %C = shl <2 x i32> %B, <i32 1, i32 1>
+  %D = sub <2 x i32> <i32 2, i32 2>, %C
+  ret <2 x i32> %D
+}