https://bugs.llvm.org/show_bug.cgi?id=34908
Bug ID: 34908
Summary: Assertion tripped in GVN: "Replacing constants with
constants is inval"
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: a...@crichton.co
CC: llvm-bugs@lists.llvm.org
When compiling the following IR
define i1 @foo() {
call void @llvm.assume(i1 undef)
ret i1 undef
}
declare void @llvm.assume(i1)
The GVN pass will crash with an assertion when assertions are enabled
$ opt -S foo.ll -gvn
opt: /home/alex/code/rust2/src/llvm/lib/Transforms/Scalar/GVN.cpp:1509: bool
llvm::GVN::replaceOperandsWithConsts(llvm::Instruction*) const: Assertion
`!isa<Constant>(Operand) && "Replacing constants with constants is invalid"'
failed.
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