Dan Gohman 339ffedca9 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47277 91177308-0d34-0410-b5e6-96231b3b80d8		2008-02-18 17:55:26 +00:00
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Analysis	don't bother calling getUnderlyingObject for non-pointers.	2008-02-18 17:28:21 +00:00
Archive	Use empty() instead of comparing size() with zero.	2008-01-29 13:02:09 +00:00
AsmParser	Back out mods to llvmAsmParser, incorrectly committed	2008-01-30 03:10:00 +00:00
Bitcode	Use empty() instead of comparing size() with zero.	2008-01-29 13:02:09 +00:00
CodeGen	New helper function getMBBFromIndex() that given an index in any instruction of an MBB returns a pointer the MBB. Reviewed by Evan.	2008-02-18 09:35:30 +00:00
Debugger	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
ExecutionEngine	Support vector constant zeros, thanks to Zack Rusin for the testcase.	2008-02-15 00:57:28 +00:00
Linker	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
Support	Fixed bug in FoldingSetIteratorImpl where we did not correctly check if	2008-02-15 21:12:46 +00:00
System	It is not safe to call fork in PrintStackTrace. Sometimes it freezes the program.	2008-02-15 18:05:54 +00:00
Target	Don't mark scalar integer multiplication as Expand on x86, since x86	2008-02-18 17:55:26 +00:00
Transforms	Transforming -A + -B --> -(A + B) isn't safe for FP, thanks	2008-02-18 17:50:16 +00:00
VMCore	Simplify caller updating using a CallSite, as	2008-02-18 17:32:13 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00