Chandler Carruth 560bddce20 [x86, dag] Teach the DAG combiner to prune inputs toa vector_shuffle ... that are unused. This allows the combiner to delete math feeding shuffles where the math isn't actually necessary. This improves some of the vperm2x128 tests that regressed when the vector shuffle lowering started actually generating vperm instructions rather than forcibly decomposing them. Sadly, this isn't enough to get this *really* right because we still form a completely unnecessary permutation. To fix that, we also need to fold shuffles which just rearrange concatenated or inserted subvectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219086 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-05 19:14:34 +00:00
..
AArch64	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
ARM	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
CPP
Generic	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Hexagon	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Inputs	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Mips	Add fptrunc to mips fast-sel	2014-10-01 18:47:02 +00:00
MSP430
NVPTX	Revert r216862 due to a performance regression	2014-10-01 15:22:13 +00:00
PowerPC	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
R600	R600/SI: Custom lower f64 -> i64 conversions	2014-10-03 23:54:56 +00:00
SPARC
SystemZ
Thumb	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Thumb2
X86	[x86, dag] Teach the DAG combiner to prune inputs toa vector_shuffle	2014-10-05 19:14:34 +00:00
XCore	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00