50 lines
1.5 KiB
LLVM
50 lines
1.5 KiB
LLVM
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;RUN: llc -mtriple=x86_64-unknown-unknown -filetype=asm -x86-asm-syntax=intel < %s | FileCheck %s --check-prefix=CHECK
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;PR34617
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;Compile it with: "clang -O1 -emit-llvm"
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;char X[4];
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;volatile char* PX;
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;char Y[4];
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;volatile char* PY;
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;char Z[4];
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;volatile char* PZ;
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;char* test057(long long x) {
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; asm ("movq %1, %%rax;"
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; "movq %%rax, %0;"
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; "pushq $Y;"
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; "popq %%rcx;"
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; "movq %%rcx, PY;"
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; "movq $X, %%rdx;"
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; "movq %%rdx, PX;"
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; :"=r"(PZ)
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; :"p"(Z)
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; :"%rax", "%rcx", "%rdx"
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; );
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; return (char*)PZ;
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;}
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; CHECK: mov rax, offset Z
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; CHECK: push offset Y
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; CHECK: pop rcx
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; CHECK: mov qword ptr [PY], rcx
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; CHECK: mov rdx, offset X
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; CHECK: mov qword ptr [PX], rdx
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@PZ = common dso_local global i8* null, align 8
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@Z = common dso_local global [4 x i8] zeroinitializer, align 1
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@X = common dso_local global [4 x i8] zeroinitializer, align 1
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@PX = common dso_local global i8* null, align 8
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@Y = common dso_local global [4 x i8] zeroinitializer, align 1
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@PY = common dso_local global i8* null, align 8
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define dso_local i8* @test057(i64 %x) {
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entry:
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%x.addr = alloca i64, align 8
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store i64 %x, i64* %x.addr, align 8
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%0 = call i8* asm "movq $1, %rax;movq %rax, $0;pushq $$Y;popq %rcx;movq %rcx, PY;movq $$X, %rdx;movq %rdx, PX;", "=r,im,~{rax},~{rcx},~{rdx},~{dirflag},~{fpsr},~{flags}"(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @Z, i32 0, i32 0))
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store i8* %0, i8** @PZ, align 8
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%1 = load i8*, i8** @PZ, align 8
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ret i8* %1
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}
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