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llvm-mirror/test/CodeGen
Dan Gohman 70b9b2f77f Don't mark scalar integer multiplication as Expand on x86, since x86
has plain one-result scalar integer multiplication instructions.
This avoids expanding such instructions into MUL_LOHI sequences that
must be special-cased at isel time, and avoids the problem with that
code that provented memory operands from being folded.

This fixes PR1874, addressesing the most common case. The uncommon
cases of optimizing multiply-high operations will require work
in DAGCombiner.

llvm-svn: 47277
2008-02-18 17:55:26 +00:00
..
Alpha llvm.memory.barrier, and impl for x86 and alpha 2008-02-16 01:24:58 +00:00
ARM Remove llvm-upgrade. 2008-02-17 20:02:20 +00:00
CBackend CBackend: Implement unaligned load/store. 2008-02-01 21:25:59 +00:00
CellSPU Overhaul Cell SPU's addressing mode internals so that there are now 2008-01-29 02:16:57 +00:00
Generic Teach LegalizeTypes how to expand and promote CTLZ, 2008-02-13 18:01:53 +00:00
IA64 Convert .cvsignore files 2007-06-29 16:35:07 +00:00
PowerPC Add testcase for recent legalizer change 2008-02-13 06:48:40 +00:00
SPARC Convert tests using "| wc -l | grep ..." to use the count script. 2007-08-15 13:36:28 +00:00
X86 Don't mark scalar integer multiplication as Expand on x86, since x86 2008-02-18 17:55:26 +00:00