https://llvm.org/bugs/show_bug.cgi?id=25445
Bug ID: 25445
Summary: [WinEH] LoopStrengthReduce crashes in the presence of
catchpads w/ phis
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: david.majne...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
consider:
void f(int *);
void g(int *b, int *c) {
int *e = b;
try {
try {
int *d = b;
for (;; ++d) f(d);
} catch (...) {
}
e = c;
f(c);
} catch (...) {
f(e);
}
}
reproduces with:
clang -cc1 -triple i686-pc-windows-msvc18.0.0 -emit-obj -fcxx-exceptions
-fexceptions -O2
crashes in:
LoopStrengthReduce.cpp:4425: BasicBlock::iterator <anonymous
namespace>::LSRInstance::AdjustInsertPositionForExpand(BasicBlock::iterator,
const <anonymous>::LSRFixup &, const <anonymous>::LSRUse &, llvm::SCEVExpander
&) const: Assertion `!isa<PHINode>(LowestIP) && !LowestIP->isEHPad() &&
!isa<DbgInfoIntrinsic>(LowestIP) && "Insertion point must be a normal
instruction"' failed.
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