Evan Cheng d158fba3e4 Add a peephole optimization to optimize pairs of bitcasts. e.g. ... v2 = bitcast v1 ... v3 = bitcast v2 ... = v3 => v2 = bitcast v1 ... = v1 if v1 and v3 are of in the same register class. bitcast between i32 and fp (and others) are often not nops since they are in different register classes. These bitcast instructions are often left because they are in different basic blocks and cannot be eliminated by dag combine. rdar://9104514 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127668 91177308-0d34-0410-b5e6-96231b3b80d8		2011-03-15 05:13:13 +00:00
..
Alpha
ARM	Add a peephole optimization to optimize pairs of bitcasts. e.g.	2011-03-15 05:13:13 +00:00
Blackfin	Be nice to Xcore and the XMOS assembler and avoid quoting section names	2011-03-04 20:03:14 +00:00
CBackend
CellSPU	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
CPP
Generic	Make this test x86 specific because the ARM backend can't handle it.	2011-02-28 12:30:47 +00:00
MBlaze
Mips	Revert "Re-enable test and hope to silence the buildbots", still broken.	2011-03-09 22:48:46 +00:00
MSP430
PowerPC	Fix mistyped CHECK lines.	2011-03-09 22:07:31 +00:00
PTX	PTX: Emit global arrays with proper sizes	2011-03-14 15:40:11 +00:00
SPARC
SystemZ
Thumb	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
Thumb2	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
X86	sext(undef) = 0, because the top bits will all be the same.	2011-03-15 02:22:10 +00:00
XCore	Fix mistyped CHECK lines.	2011-03-09 22:07:31 +00:00