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llvm-6502/test/CodeGen/X86/coalescer-commute5.ll
Evan Cheng 4ff3f1cc57 - Fix a subtle bug in RemoveCopyByCommutingDef. ALR is the live range where the source is defined; BLR is the live range which is defined by the copy.
If ALR and BLR overlaps and end of BLR extends beyond end of ALR, e.g.                                                                                                 
 A = or A, B                                                                                                                                                            
 ...                                                                                                                                                                    
 B = A                                                                                                                                                                  
 ...                                                                                                                                                                    
 C = A<kill>                                                                                                                                                            
 ...                                                                                                                                                                    
   = B                                                                                                                                                                  
                                                                                                                                                                        
then do not add kills of A to the newly created B interval.
- Also fix some kill info update bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48141 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-10 08:11:32 +00:00

22 lines
956 B
LLVM

; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin -mattr=+sse2 | not grep movaps
define i32 @t() {
entry:
br i1 true, label %bb1664, label %bb1656
bb1656: ; preds = %entry
ret i32 0
bb1664: ; preds = %entry
%tmp4297 = bitcast <16 x i8> zeroinitializer to <2 x i64> ; <<2 x i64>> [#uses=2]
%tmp4351 = call <16 x i8> @llvm.x86.sse2.pcmpeq.b( <16 x i8> zeroinitializer, <16 x i8> zeroinitializer ) nounwind readnone ; <<16 x i8>> [#uses=0]
br i1 false, label %bb5310, label %bb4743
bb4743: ; preds = %bb1664
%tmp4360.not28 = or <2 x i64> zeroinitializer, %tmp4297 ; <<2 x i64>> [#uses=1]
br label %bb5310
bb5310: ; preds = %bb4743, %bb1664
%tmp4360.not28.pn = phi <2 x i64> [ %tmp4360.not28, %bb4743 ], [ %tmp4297, %bb1664 ] ; <<2 x i64>> [#uses=1]
%tmp4415.not.pn = or <2 x i64> zeroinitializer, %tmp4360.not28.pn ; <<2 x i64>> [#uses=0]
ret i32 0
}
declare <16 x i8> @llvm.x86.sse2.pcmpeq.b(<16 x i8>, <16 x i8>) nounwind readnone