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Fix PR2339
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51226 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2856,7 +2856,7 @@ Instruction *InstCombiner::visitMul(BinaryOperator &I) {
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if (BinaryOperator *Op0I = dyn_cast<BinaryOperator>(Op0))
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if (Op0I->getOpcode() == Instruction::Add && Op0I->hasOneUse() &&
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isa<ConstantInt>(Op0I->getOperand(1))) {
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isa<ConstantInt>(Op0I->getOperand(1)) && isa<ConstantInt>(Op1)) {
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// Canonicalize (X+C1)*C2 -> X*C2+C1*C2.
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Instruction *Add = BinaryOperator::CreateMul(Op0I->getOperand(0),
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Op1, "tmp");
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23
test/Transforms/InstCombine/2008-05-17-InfLoop.ll
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23
test/Transforms/InstCombine/2008-05-17-InfLoop.ll
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@ -0,0 +1,23 @@
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; RUN: llvm-as < %s | opt -instcombine -disable-output
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; PR2339
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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-s0:0:64-f80:32:32"
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target triple = "i686-pc-linux-gnu"
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declare void @BZALLOC(i32)
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define void @f(i32) {
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entry:
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%blockSize100k = alloca i32 ; <i32*> [#uses=2]
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store i32 %0, i32* %blockSize100k
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%n = alloca i32 ; <i32*> [#uses=2]
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load i32* %blockSize100k ; <i32>:1 [#uses=1]
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store i32 %1, i32* %n
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load i32* %n ; <i32>:2 [#uses=1]
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add i32 %2, 2 ; <i32>:3 [#uses=1]
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mul i32 %3, ptrtoint (i32* getelementptr (i32* null, i32 1) to i32) ; <i32>:4 [#uses=1]
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call void @BZALLOC( i32 %4 )
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br label %return
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return: ; preds = %entry
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ret void
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}
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