File: 2008-02-20-InlineAsmClobber.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc -no-integrated-as < %s | FileCheck %s
; PR2078
; The clobber list says that "ax" is clobbered.  Make sure that eax isn't 
; allocated to the input/output register.
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"
target triple = "i386-apple-darwin8"
@pixels = weak global i32 0		; <ptr> [#uses=2]

define void @test() nounwind  {
entry:
	%tmp = load i32, ptr @pixels, align 4		; <i32> [#uses=1]
	%tmp1 = tail call i32 asm sideeffect "a: $0 $1", "=r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( i32 %tmp ) nounwind 		; <i32> [#uses=1]
	store i32 %tmp1, ptr @pixels, align 4
	ret void
}

; CHECK: a:
; CHECK-NOT: ax
; CHECK: {{$}}

define void @test2(ptr %block, ptr %pixels, i32 %line_size) nounwind  {
entry:
	%tmp1 = getelementptr i16, ptr %block, i32 64		; <ptr> [#uses=1]
	%tmp3 = tail call ptr asm sideeffect "b: $0 $1 $2", "=r,r,0,~{dirflag},~{fpsr},~{flags},~{ax}"( ptr %tmp1, ptr %pixels ) nounwind 		; <ptr> [#uses=0]
	ret void
}

; CHECK: b:
; CHECK-NOT: ax
; CHECK: {{$}}