Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/X86/smul-with-overflow.ll @ 33:e4204d083e25
LLVM 3.5
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Thu, 12 Dec 2013 14:32:10 +0900 |
parents | 95c75e76d11b |
children | afa8332a0e37 |
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; RUN: llc < %s -march=x86 | FileCheck %s @ok = internal constant [4 x i8] c"%d\0A\00" @no = internal constant [4 x i8] c"no\0A\00" define i1 @test1(i32 %v1, i32 %v2) nounwind { entry: %t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2) %sum = extractvalue {i32, i1} %t, 0 %obit = extractvalue {i32, i1} %t, 1 br i1 %obit, label %overflow, label %normal normal: %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind ret i1 true overflow: %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false ; CHECK-LABEL: test1: ; CHECK: imull ; CHECK-NEXT: jno } define i1 @test2(i32 %v1, i32 %v2) nounwind { entry: %t = call {i32, i1} @llvm.smul.with.overflow.i32(i32 %v1, i32 %v2) %sum = extractvalue {i32, i1} %t, 0 %obit = extractvalue {i32, i1} %t, 1 br i1 %obit, label %overflow, label %normal overflow: %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind ret i1 false normal: %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind ret i1 true ; CHECK-LABEL: test2: ; CHECK: imull ; CHECK-NEXT: jno } declare i32 @printf(i8*, ...) nounwind declare {i32, i1} @llvm.smul.with.overflow.i32(i32, i32) define i32 @test3(i32 %a, i32 %b) nounwind readnone { entry: %tmp0 = add i32 %b, %a %tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 2) %tmp2 = extractvalue { i32, i1 } %tmp1, 0 ret i32 %tmp2 ; CHECK-LABEL: test3: ; CHECK: addl ; CHECK-NEXT: addl ; CHECK-NEXT: ret } define i32 @test4(i32 %a, i32 %b) nounwind readnone { entry: %tmp0 = add i32 %b, %a %tmp1 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %tmp0, i32 4) %tmp2 = extractvalue { i32, i1 } %tmp1, 0 ret i32 %tmp2 ; CHECK-LABEL: test4: ; CHECK: addl ; CHECK: mull ; CHECK-NEXT: ret } declare { i63, i1 } @llvm.smul.with.overflow.i63(i63, i63) nounwind readnone define i1 @test5() nounwind { entry: %res = call { i63, i1 } @llvm.smul.with.overflow.i63(i63 4, i63 4611686018427387903) %sum = extractvalue { i63, i1 } %res, 0 %overflow = extractvalue { i63, i1 } %res, 1 ret i1 %overflow ; Was returning false, should return true (not constant folded yet though). ; PR13991 ; CHECK-LABEL: test5: ; CHECK-NOT: xorb }