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Fixed a coalescer bug caused by a typo.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48526 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-03-19 02:26:36 +00:00
parent dc1ce7bdc6
commit 82a6d23700
2 changed files with 52 additions and 1 deletions
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2
lib/CodeGen/SimpleRegisterCoalescing.cpp
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@ -365,7 +365,7 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(LiveInterval &IntA,
IntB.removeValNo(BValNo);
for (unsigned i = 0, e = BDeadValNos.size(); i != e; ++i)
IntB.removeValNo(BDeadValNos[i]);
VNInfo *ValNo = IntB.getNextValue(ALR->start, 0, li_->getVNInfoAllocator());
VNInfo *ValNo = IntB.getNextValue(AValNo->def, 0, li_->getVNInfoAllocator());
for (LiveInterval::iterator AI = IntA.begin(), AE = IntA.end();
AI != AE; ++AI) {
if (AI->valno != AValNo) continue;

51
test/CodeGen/X86/2008-03-18-CoalescerBug.ll Normal file
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@ -0,0 +1,51 @@
; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -mattr=+sse2 -disable-fp-elim | grep movss | count 1
; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -mattr=+sse2 -disable-fp-elim -stats |& grep {Number of re-materialization} | grep 1
%struct..0objc_object = type opaque
%struct.OhBoy = type { }
%struct.BooHoo = type { i32 }
%struct.objc_selector = type opaque
@llvm.used = appending global [1 x i8*] [ i8* bitcast (void (%struct.OhBoy*, %struct.objc_selector*, i32, %struct.BooHoo*)* @"-[MessageHeaderDisplay adjustFontSizeBy:viewingState:]" to i8*) ], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
define void @"-[MessageHeaderDisplay adjustFontSizeBy:viewingState:]"(%struct.OhBoy* %self, %struct.objc_selector* %_cmd, i32 %delta, %struct.BooHoo* %viewingState) nounwind {
entry:
%tmp19 = load i32* null, align 4 ; <i32> [#uses=1]
%tmp24 = tail call float bitcast (void (%struct..0objc_object*, ...)* @objc_msgSend_fpret to float (%struct..0objc_object*, %struct.objc_selector*)*)( %struct..0objc_object* null, %struct.objc_selector* null ) nounwind ; <float> [#uses=2]
%tmp30 = icmp sgt i32 %delta, 0 ; <i1> [#uses=1]
br i1 %tmp30, label %bb33, label %bb87.preheader
bb33: ; preds = %entry
%tmp28 = add float 0.000000e+00, %tmp24 ; <float> [#uses=1]
%tmp35 = fcmp ogt float %tmp28, 1.800000e+01 ; <i1> [#uses=1]
br i1 %tmp35, label %bb38, label %bb87.preheader
bb38: ; preds = %bb33
%tmp53 = add i32 %tmp19, %delta ; <i32> [#uses=2]
br i1 false, label %bb50, label %bb43
bb43: ; preds = %bb38
store i32 %tmp53, i32* null, align 4
ret void
bb50: ; preds = %bb38
%tmp56 = sub float 1.800000e+01, %tmp24 ; <float> [#uses=1]
%tmp57 = fcmp ugt float 0.000000e+00, %tmp56 ; <i1> [#uses=1]
br i1 %tmp57, label %bb64, label %bb87.preheader
bb64: ; preds = %bb50
ret void
bb87.preheader: ; preds = %bb50, %bb33, %entry
%usableDelta.0 = phi i32 [ %delta, %entry ], [ %delta, %bb33 ], [ %tmp53, %bb50 ] ; <i32> [#uses=1]
%tmp100 = tail call %struct..0objc_object* (%struct..0objc_object*, %struct.objc_selector*, ...)* @objc_msgSend( %struct..0objc_object* null, %struct.objc_selector* null, %struct..0objc_object* null ) nounwind ; <%struct..0objc_object*> [#uses=2]
%tmp106 = tail call %struct..0objc_object* (%struct..0objc_object*, %struct.objc_selector*, ...)* @objc_msgSend( %struct..0objc_object* %tmp100, %struct.objc_selector* null ) nounwind ; <%struct..0objc_object*> [#uses=0]
%umax = select i1 false, i32 1, i32 0 ; <i32> [#uses=1]
br label %bb108
bb108: ; preds = %bb108, %bb87.preheader
%attachmentIndex.0.reg2mem.0 = phi i32 [ 0, %bb87.preheader ], [ %indvar.next, %bb108 ] ; <i32> [#uses=2]
%tmp114 = tail call %struct..0objc_object* (%struct..0objc_object*, %struct.objc_selector*, ...)* @objc_msgSend( %struct..0objc_object* %tmp100, %struct.objc_selector* null, i32 %attachmentIndex.0.reg2mem.0 ) nounwind ; <%struct..0objc_object*> [#uses=1]
%tmp121 = tail call %struct..0objc_object* (%struct..0objc_object*, %struct.objc_selector*, ...)* @objc_msgSend( %struct..0objc_object* %tmp114, %struct.objc_selector* null, i32 %usableDelta.0 ) nounwind ; <%struct..0objc_object*> [#uses=0]
%indvar.next = add i32 %attachmentIndex.0.reg2mem.0, 1 ; <i32> [#uses=2]
%exitcond = icmp eq i32 %indvar.next, %umax ; <i1> [#uses=1]
br i1 %exitcond, label %bb130, label %bb108
bb130: ; preds = %bb108
ret void
}
declare %struct..0objc_object* @objc_msgSend(%struct..0objc_object*, %struct.objc_selector*, ...)
declare void @objc_msgSend_fpret(%struct..0objc_object*, ...)