Dan Gohman 3afda6e9d1 When the coalescer is doing rematerializing, have it remove ... the copy instruction from the instruction list before asking the target to create the new instruction. This gets the old instruction out of the way so that it doesn't interfere with the target's rematerialization code. In the case of x86, this helps it find more cases where EFLAGS is not live. Also, in the X86InstrInfo.cpp, teach isSafeToClobberEFLAGS to check to see if it reached the end of the block after scanning each instruction, instead of just before. This lets it notice when the end of the block is only two instructions away, without doing any additional scanning. These changes allow rematerialization to clobber EFLAGS in more cases, for example using xor instead of mov to set the return value to zero in the included testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57872 91177308-0d34-0410-b5e6-96231b3b80d8		2008-10-21 03:24:31 +00:00
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Analysis	Trim #includes.	2008-10-16 20:18:31 +00:00
Archive	Initial support for the CMake build system.	2008-09-22 01:08:49 +00:00
AsmParser	regenerate	2008-10-15 12:05:02 +00:00
Bitcode	Rename APFloat::convertToAPInt to bitcastToAPInt to	2008-10-09 18:53:47 +00:00
CodeGen	When the coalescer is doing rematerializing, have it remove	2008-10-21 03:24:31 +00:00
Debugger	Initial support for the CMake build system.	2008-09-22 01:08:49 +00:00
ExecutionEngine	little optimization: reuse getPointerToGlobalIfAvailable(CGV) value in emitGlobals()	2008-10-14 10:04:52 +00:00
Linker	Also properly handle linking of strong alias and weak global	2008-10-15 20:10:50 +00:00
Support	Fix command-line option printing to print two spaces where needed,	2008-10-14 20:25:08 +00:00
System	Update the stub and callback code to handle lazy compilation. The stub	2008-10-20 21:39:23 +00:00
Target	When the coalescer is doing rematerializing, have it remove	2008-10-21 03:24:31 +00:00
Transforms	Use Function::getEntryBlock() instead of Function::front(), for clarity.	2008-10-21 03:10:28 +00:00
VMCore	Keep track of *which* input constraint matches an output	2008-10-17 16:47:46 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00