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Fix another bug, this time in PREing select instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37878 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2007-07-04 22:33:23 +00:00
parent 8ff70c2635
commit ec3ed5f8e4
2 changed files with 19 additions and 2 deletions
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3
lib/Transforms/Scalar/GVNPRE.cpp
View File

@ -1586,8 +1586,7 @@ void GVNPRE::insertion_pre(Value* e, BasicBlock* BB,
newVal = new ExtractElementInst(s1, s2, S->getName()+".gvnpre",
(*PI)->getTerminator());
else if (SelectInst* S = dyn_cast<SelectInst>(U))
newVal = new SelectInst(S->getCondition(), S->getTrueValue(),
S->getFalseValue(), S->getName()+".gvnpre",
newVal = new SelectInst(s1, s2, s3, S->getName()+".gvnpre",
(*PI)->getTerminator());
else if (CastInst* C = dyn_cast<CastInst>(U))
newVal = CastInst::create(C->getOpcode(), s1, C->getType(),

18
test/Transforms/GVNPRE/2007-07-04-SelectInst.ll Normal file
View File

@ -0,0 +1,18 @@
; RUN: llvm-as < %s | opt -gvnpre | llvm-dis
define void @set_depth_values(i32 %level) {
cond_true90: ; preds = %cond_next84
br i1 false, label %cond_true105, label %cond_true151
cond_true105: ; preds = %cond_true90
%tmp132 = add i32 %level, -3 ; <i32> [#uses=2]
%tmp133 = icmp sgt i32 %tmp132, 0 ; <i1> [#uses=1]
%max134 = select i1 %tmp133, i32 %tmp132, i32 1 ; <i32> [#uses=0]
br label %cond_true151
cond_true151: ; preds = %cond_true140, %cond_true105
%tmp153 = add i32 %level, -3 ; <i32> [#uses=2]
%tmp154 = icmp sgt i32 %tmp153, 0 ; <i1> [#uses=1]
%max155 = select i1 %tmp154, i32 %tmp153, i32 1 ; <i32> [#uses=0]
ret void
}