http://llvm.org/bugs/show_bug.cgi?id=18067
Bug ID: 18067
Summary: GVN Miscompile
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 11613
--> http://llvm.org/bugs/attachment.cgi?id=11613&action=edit
bugpoint reduced test case
ClangBugs2/diff/t65630 from PR16431 is a GVN miscompile:
To reproduce:
opt -basicaa -gvn bugpoint-tooptimize.bc -o opt.bc
clang opt.bc bugpoint-tonotoptimize.bc -o t
./t < input.txt
res = 4272243118
whereas running:
clang bugpoint-tooptimize.bc bugpoint-tonotoptimize.bc -o t
./t < input.txt
res = 4294956171
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