http://llvm.org/bugs/show_bug.cgi?id=20210
Bug ID: 20210
Summary: optimization passes created malformed bitcode
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 12738
--> http://llvm.org/bugs/attachment.cgi?id=12738&action=edit
reduced c sources
clang -O0 of the attached test_zext_fail.c creates on x86_64 attached
test_zext_fail.bc using llvm trunk r212318. Following set of optimization
passes create malformed bitcode:
opt -S test_zext_fail.bc -sroa -early-cse -simplifycfg -instcombine
-simplifycfg
Instruction does not dominate all uses!
%conv7 = zext i8 %p1 to i32
call void @fn2(i32 %conv7) #2
LLVM ERROR: Broken function found, compilation aborted!
The problem is reporduceable with the aarch64 backend.
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