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llvm-mirror/test/CodeGen/X86/2008-09-18-inline-asm-2.ll
Dale Johannesen 94738aa18e In asm's, output operands with matching input constraints
have to be registers, per gcc documentation.  This affects
the logic for determining what "g" should lower to.  PR 7393.
A couple of existing testcases are affected.

llvm-svn: 107079
2010-06-28 22:09:45 +00:00

28 lines
1.6 KiB
LLVM

; RUN: llc < %s -march=x86 | grep "#%ebp %edi %ebx 8(%esi) %eax %dl"
; RUN: llc < %s -march=x86 -regalloc=fast | grep "#%ebx %esi %edi 8(%ebp) %eax %dl"
; The 1st, 2nd, 3rd and 5th registers above must all be different. The registers
; referenced in the 4th and 6th operands must not be the same as the 1st or 5th
; operand. There are many combinations that work; this is what llc puts out now.
; ModuleID = '<stdin>'
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"
%struct.foo = type { i32, i32, i8* }
define i32 @get(%struct.foo* %c, i8* %state) nounwind {
entry:
%0 = getelementptr %struct.foo* %c, i32 0, i32 0 ; <i32*> [#uses=2]
%1 = getelementptr %struct.foo* %c, i32 0, i32 1 ; <i32*> [#uses=2]
%2 = getelementptr %struct.foo* %c, i32 0, i32 2 ; <i8**> [#uses=2]
%3 = load i32* %0, align 4 ; <i32> [#uses=1]
%4 = load i32* %1, align 4 ; <i32> [#uses=1]
%5 = load i8* %state, align 1 ; <i8> [#uses=1]
%asmtmp = tail call { i32, i32, i32, i32 } asm sideeffect "#$0 $1 $2 $3 $4 $5", "=&r,=r,=r,=*m,=&q,=*imr,1,2,*m,5,~{dirflag},~{fpsr},~{flags},~{cx}"(i8** %2, i8* %state, i32 %3, i32 %4, i8** %2, i8 %5) nounwind ; <{ i32, i32, i32, i32 }> [#uses=3]
%asmresult = extractvalue { i32, i32, i32, i32 } %asmtmp, 0 ; <i32> [#uses=1]
%asmresult1 = extractvalue { i32, i32, i32, i32 } %asmtmp, 1 ; <i32> [#uses=1]
store i32 %asmresult1, i32* %0
%asmresult2 = extractvalue { i32, i32, i32, i32 } %asmtmp, 2 ; <i32> [#uses=1]
store i32 %asmresult2, i32* %1
ret i32 %asmresult
}