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Don't restrict the set of instructions where we try to constant-fold the
operands; it's possible to end up with a constant-foldable operand to most instructions, even those which can't trap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75845 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -13021,9 +13021,7 @@ bool InstCombiner::DoOneIteration(Function &F, unsigned Iteration) {
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continue;
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continue;
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}
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}
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if (TD &&
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if (TD) {
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(I->getType()->getTypeID() == Type::VoidTyID ||
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I->isTrapping())) {
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// See if we can constant fold its operands.
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// See if we can constant fold its operands.
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for (User::op_iterator i = I->op_begin(), e = I->op_end(); i != e; ++i)
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for (User::op_iterator i = I->op_begin(), e = I->op_end(); i != e; ++i)
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if (ConstantExpr *CE = dyn_cast<ConstantExpr>(i))
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if (ConstantExpr *CE = dyn_cast<ConstantExpr>(i))
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13
test/Transforms/InstCombine/fold-bin-operand.ll
Normal file
13
test/Transforms/InstCombine/fold-bin-operand.ll
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@ -0,0 +1,13 @@
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep icmp
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define i1 @f(i1 %x) {
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%b = and i1 %x, icmp eq (i8* inttoptr (i32 1 to i8*), i8* inttoptr (i32 2 to i8*))
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ret i1 %b
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}
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; FIXME: This doesn't fold at the moment!
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; define i32 @f(i32 %x) {
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; %b = add i32 %x, zext (i1 icmp eq (i8* inttoptr (i32 1000000 to i8*), i8* inttoptr (i32 2000000 to i8*)) to i32)
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; ret i32 %b
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;}
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