2fc0d17e8b
D150464 updated the cost model for function specialization. Unfortunately, this also crashes when trying to build stage2 LLD with thinLTO and assertions. It looks like the issue is caused by a mishandling of the Constant in a SwitchInst since the Constant cannot always be assumed to safely casted to a ConstantInt. In the case of the crash, Constant was a ConstantExpr which triggered the assertion. Reviewed By: ChuanqiXu Differential Revision: https://reviews.llvm.org/D154159
23 lines
420 B
LLVM
23 lines
420 B
LLVM
; RUN: opt -passes="ipsccp<func-spec>" -force-specialization -S < %s
|
|
; Check that we don't crash when SwitchInst Constant is not ConstantInt.
|
|
|
|
@S = external constant [1 x i8]
|
|
|
|
define i1 @foo() {
|
|
entry:
|
|
%tmp = call i32 @bar(ptr @S)
|
|
ret i1 0
|
|
}
|
|
|
|
define i32 @bar(ptr %arg) {
|
|
entry:
|
|
%magicptr = ptrtoint ptr %arg to i64
|
|
switch i64 %magicptr, label %bb2 [
|
|
i64 0, label %bb1
|
|
]
|
|
bb1:
|
|
ret i32 0
|
|
bb2:
|
|
ret i32 1
|
|
}
|