https://llvm.org/bugs/show_bug.cgi?id=25981
Bug ID: 25981
Summary: -O3 on AMD Phenom causes long compilation time
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: dcb...@hotmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 15538
--> https://llvm.org/bugs/attachment.cgi?id=15538&action=edit
C source code
The attached file, when compiled with clang trunk revision 256486,
fails to compile in 20 minutes CPU time on a 3.5GHz AMD Phenom.
-O2 takes 2.4 seconds.
clang version 3.8 with -O3 takes 1.8 seconds.
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