Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/X86/fast-isel-gep.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 | 60c9769439b8 |
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; RUN: llc < %s -mtriple=x86_64-linux -O0 | FileCheck %s --check-prefix=X64 ; RUN: llc < %s -mtriple=x86_64-win32 -O0 | FileCheck %s --check-prefix=X64 ; RUN: llc < %s -march=x86 -O0 | FileCheck %s --check-prefix=X32 ; GEP indices are interpreted as signed integers, so they ; should be sign-extended to 64 bits on 64-bit targets. ; PR3181 define i32 @test1(i32 %t3, i32* %t1) nounwind { %t9 = getelementptr i32* %t1, i32 %t3 ; <i32*> [#uses=1] %t15 = load i32* %t9 ; <i32> [#uses=1] ret i32 %t15 ; X32-LABEL: test1: ; X32: movl (%eax,%ecx,4), %eax ; X32: ret ; X64-LABEL: test1: ; X64: movslq %e[[A0:di|cx]], %rax ; X64: movl (%r[[A1:si|dx]],%rax,4), %eax ; X64: ret } define i32 @test2(i64 %t3, i32* %t1) nounwind { %t9 = getelementptr i32* %t1, i64 %t3 ; <i32*> [#uses=1] %t15 = load i32* %t9 ; <i32> [#uses=1] ret i32 %t15 ; X32-LABEL: test2: ; X32: movl (%edx,%ecx,4), %e ; X32: ret ; X64-LABEL: test2: ; X64: movl (%r[[A1]],%r[[A0]],4), %eax ; X64: ret } ; PR4984 define i8 @test3(i8* %start) nounwind { entry: %A = getelementptr i8* %start, i64 -2 ; <i8*> [#uses=1] %B = load i8* %A, align 1 ; <i8> [#uses=1] ret i8 %B ; X32-LABEL: test3: ; X32: movl 4(%esp), %eax ; X32: movb -2(%eax), %al ; X32: ret ; X64-LABEL: test3: ; X64: movb -2(%r[[A0]]), %al ; X64: ret } define double @test4(i64 %x, double* %p) nounwind { entry: %x.addr = alloca i64, align 8 ; <i64*> [#uses=2] %p.addr = alloca double*, align 8 ; <double**> [#uses=2] store i64 %x, i64* %x.addr store double* %p, double** %p.addr %tmp = load i64* %x.addr ; <i64> [#uses=1] %add = add nsw i64 %tmp, 16 ; <i64> [#uses=1] %tmp1 = load double** %p.addr ; <double*> [#uses=1] %arrayidx = getelementptr inbounds double* %tmp1, i64 %add ; <double*> [#uses=1] %tmp2 = load double* %arrayidx ; <double> [#uses=1] ret double %tmp2 ; X32-LABEL: test4: ; X32: 128(%e{{.*}},%e{{.*}},8) ; X64-LABEL: test4: ; X64: 128(%r{{.*}},%r{{.*}},8) } ; PR8961 - Make sure the sext for the GEP addressing comes before the load that ; is folded. define i64 @test5(i8* %A, i32 %I, i64 %B) nounwind { %v8 = getelementptr i8* %A, i32 %I %v9 = bitcast i8* %v8 to i64* %v10 = load i64* %v9 %v11 = add i64 %B, %v10 ret i64 %v11 ; X64-LABEL: test5: ; X64: movslq %e[[A1]], %rax ; X64-NEXT: (%r[[A0]],%rax), ; X64: ret } ; PR9500, rdar://9156159 - Don't do non-local address mode folding, ; because it may require values which wouldn't otherwise be live out ; of their blocks. define void @test6() { if.end: ; preds = %if.then, %invoke.cont %tmp15 = load i64* undef %dec = add i64 %tmp15, 13 store i64 %dec, i64* undef %call17 = invoke i8* @_ZNK18G__FastAllocString4dataEv() to label %invoke.cont16 unwind label %lpad invoke.cont16: ; preds = %if.then14 %arrayidx18 = getelementptr inbounds i8* %call17, i64 %dec store i8 0, i8* %arrayidx18 unreachable lpad: ; preds = %if.end19, %if.then14, %if.end, %entry %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 cleanup unreachable } declare i8* @_ZNK18G__FastAllocString4dataEv() nounwind ; PR10605 / rdar://9930964 - Don't fold loads incorrectly. The load should ; happen before the store. define i32 @test7({i32,i32,i32}* %tmp1, i32 %tmp71, i32 %tmp63) nounwind { ; X64-LABEL: test7: ; X64: movl 8({{%rdi|%rcx}}), %eax ; X64: movl $4, 8({{%rdi|%rcx}}) %tmp29 = getelementptr inbounds {i32,i32,i32}* %tmp1, i32 0, i32 2 %tmp30 = load i32* %tmp29, align 4 %p2 = getelementptr inbounds {i32,i32,i32}* %tmp1, i32 0, i32 2 store i32 4, i32* %p2 %tmp72 = or i32 %tmp71, %tmp30 %tmp73 = icmp ne i32 %tmp63, 32 br i1 %tmp73, label %T, label %F T: ret i32 %tmp72 F: ret i32 4 } declare i32 @__gxx_personality_v0(...)