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comparison test/CodeGen/X86/2008-02-20-InlineAsmClobber.ll @ 0:95c75e76d11b

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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-1:000000000000 0:95c75e76d11b
1 ; RUN: llc < %s | FileCheck %s
2 ; PR2078
3 ; The clobber list says that "ax" is clobbered. Make sure that eax isn't
4 ; allocated to the input/output register.
5 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
6 target triple = "i386-apple-darwin8"
7 @pixels = weak global i32 0 ; <i32*> [#uses=2]
8
9 define void @test() nounwind {
10 entry:
11 %tmp = load i32* @pixels, align 4 ; <i32> [#uses=1]
12 %tmp1 = tail call i32 asm sideeffect "a: $0 $1", "=r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( i32 %tmp ) nounwind ; <i32> [#uses=1]
13 store i32 %tmp1, i32* @pixels, align 4
14 ret void
15 }
16
17 ; CHECK: a:
18 ; CHECK-NOT: ax
19 ; CHECK: {{$}}
20
21 define void @test2(i16* %block, i8* %pixels, i32 %line_size) nounwind {
22 entry:
23 %tmp1 = getelementptr i16* %block, i32 64 ; <i16*> [#uses=1]
24 %tmp3 = tail call i8* asm sideeffect "b: $0 $1 $2", "=r,r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( i16* %tmp1, i8* %pixels ) nounwind ; <i8*> [#uses=0]
25 ret void
26 }
27
28 ; CHECK: b:
29 ; CHECK-NOT: ax
30 ; CHECK: {{$}}