http://llvm.org/bugs/show_bug.cgi?id=14025
Bug #: 14025
Summary: clang/LLVM miscompiles TSVC benchmarks on Darwin
Product: libraries
Version: trunk
Platform: PC
OS/Version: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Some small number of the TSVC loop benchmarks that I recently added to the test
suite seem to be miscompiled on Darwin.
For example, in Equivalencing-flt, test S1421
returns 17208 when compiled with clang on Darwin x86_64 (going back at
least to LLVM 2.9). gcc on Darwin returns 16000. Both clang and gcc on
Linux on x86_64 return 16000. Both clang and gcc on PowerPC return
16000.
http://llvm.org/perf/db_default/v4/nts/4568 shows the current tests affected
are:
MultiSource/Benchmarks/TSVC/Equivalencing-dbl/Equivalencing-dbl
MultiSource/Benchmarks/TSVC/Equivalencing-flt/Equivalencing-flt
MultiSource/Benchmarks/TSVC/GlobalDataFlow-dbl/GlobalDataFlow-dbl
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