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ce0f9aef12
The fast register allocator is not supposed to work in the optimizing pipeline. It doesn't make sense to compute live intervals, run full copy coalescing, and then run RAFast. Fast register allocation in the optimizing pipeline is better done by RABasic. llvm-svn: 158242
52 lines
2.7 KiB
LLVM
52 lines
2.7 KiB
LLVM
; RUN: llc < %s -march=x86 -mtriple=i386-apple-darwin9 -regalloc=fast -optimize-regalloc=0 | FileCheck %s
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; RUN: llc -O0 < %s -march=x86 -mtriple=i386-apple-darwin9 -regalloc=fast | FileCheck %s
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; CHECKed instructions should be the same with or without -O0.
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@.str = private constant [12 x i8] c"x + y = %i\0A\00", align 1 ; <[12 x i8]*> [#uses=1]
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define i32 @main() nounwind {
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entry:
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; CHECK: movl 24(%esp), %eax
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; CHECK-NOT: movl
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; CHECK: movl %eax, 36(%esp)
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; CHECK-NOT: movl
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; CHECK: movl 28(%esp), %ebx
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; CHECK-NOT: movl
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; CHECK: movl %ebx, 40(%esp)
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; CHECK-NOT: movl
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; CHECK: addl %ebx, %eax
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%retval = alloca i32 ; <i32*> [#uses=2]
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%"%ebx" = alloca i32 ; <i32*> [#uses=1]
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%"%eax" = alloca i32 ; <i32*> [#uses=2]
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%result = alloca i32 ; <i32*> [#uses=2]
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%y = alloca i32 ; <i32*> [#uses=2]
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%x = alloca i32 ; <i32*> [#uses=2]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 1, i32* %x, align 4
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store i32 2, i32* %y, align 4
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call void asm sideeffect alignstack "# top of block", "~{dirflag},~{fpsr},~{flags},~{edi},~{esi},~{edx},~{ecx},~{eax}"() nounwind
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%asmtmp = call i32 asm sideeffect alignstack "movl $1, $0", "=={eax},*m,~{dirflag},~{fpsr},~{flags},~{memory}"(i32* %x) nounwind ; <i32> [#uses=1]
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store i32 %asmtmp, i32* %"%eax"
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%asmtmp1 = call i32 asm sideeffect alignstack "movl $1, $0", "=={ebx},*m,~{dirflag},~{fpsr},~{flags},~{memory}"(i32* %y) nounwind ; <i32> [#uses=1]
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store i32 %asmtmp1, i32* %"%ebx"
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%1 = call i32 asm "", "={bx}"() nounwind ; <i32> [#uses=1]
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%2 = call i32 asm "", "={ax}"() nounwind ; <i32> [#uses=1]
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%asmtmp2 = call i32 asm sideeffect alignstack "addl $1, $0", "=={eax},{ebx},{eax},~{dirflag},~{fpsr},~{flags},~{memory}"(i32 %1, i32 %2) nounwind ; <i32> [#uses=1]
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store i32 %asmtmp2, i32* %"%eax"
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%3 = call i32 asm "", "={ax}"() nounwind ; <i32> [#uses=1]
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call void asm sideeffect alignstack "movl $0, $1", "{eax},*m,~{dirflag},~{fpsr},~{flags},~{memory}"(i32 %3, i32* %result) nounwind
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%4 = load i32* %result, align 4 ; <i32> [#uses=1]
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%5 = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([12 x i8]* @.str, i32 0, i32 0), i32 %4) nounwind ; <i32> [#uses=0]
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store i32 0, i32* %0, align 4
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%6 = load i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %6, i32* %retval, align 4
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br label %return
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return: ; preds = %entry
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%retval3 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval3
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}
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declare i32 @printf(i8*, ...) nounwind
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