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DIV8r must define %AX since X86DAGToDAGISel::Select() sometimes uses it

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instead of %AL/%AH.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2010-02-24 00:39:35 +00:00
parent cec479de4e
commit c3027f769a
2 changed files with 21 additions and 1 deletions
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20
test/CodeGen/X86/2010-02-23-DIV8rDefinesAX.ll Normal file
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@@ -0,0 +1,20 @@
; RUN: llc < %s
; PR6374
;
; This test produces a DIV8r instruction and uses %AX instead of %AH and %AL.
; The DIV8r must have the right imp-defs for that to work.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
%struct._i386_state = type { %union.anon }
%union.anon = type { [0 x i8] }
define void @i386_aam(%struct._i386_state* nocapture %cpustate) nounwind ssp {
entry:
%call = tail call fastcc signext i8 @FETCH() ; <i8> [#uses=1]
%rem = urem i8 0, %call ; <i8> [#uses=1]
store i8 %rem, i8* undef
ret void
}
declare fastcc signext i8 @FETCH() nounwind readnone ssp