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Author SHA1 Message Date
Matthias Braun 6b898beb8e X86: Do not use llc -march in tests. 
`llc -march` is problematic because it only switches the target
architecture, but leaves the operating system unchanged. This
occasionally leads to indeterministic tests because the OS from
LLVM_DEFAULT_TARGET_TRIPLE is used.

However we can simply always use `llc -mtriple` instead. This changes
all the tests to do this to avoid people using -march when they copy and
paste parts of tests.

See also the discussion in https://reviews.llvm.org/D35287

llvm-svn: 309774
 2017-08-02 00:28:10 +00:00
NAKAMURA Takumi 0ecb6e77f3 llvm/test/CodeGen/X86/2014-05-29-factorial.ll: Relax an expression to match Win32 x64. 
llvm-svn: 210471
 2014-06-09 14:20:23 +00:00
Andrea Di Biagio dfbdc71ea1 [X86] Avoid emitting unnecessary test instructions. 
This patch teaches the backend how to check for the 'NoSignedWrap' flag on
binary operations to improve the emission of 'test' instructions.

If the result of a binary operation is known not to overflow we know that
resetting the Overflow flag is unnecessary and so we can avoid emitting
the test instruction.

Patch by Marcello Maggioni.

llvm-svn: 210468
 2014-06-09 12:34:50 +00:00