Tim Northover 5a4800a05f ARM: override cost function to re-enable ConstantHoisting (& fix it). ... At some point, ARM stopped getting any benefit from ConstantHoisting because the pass called a different variant of getIntImmCost. Reimplementing the correct variant revealed some problems, however: + ConstantHoisting was modifying switch statements. This is simply invalid, the cases must remain integer constants no matter the notional cost. + ConstantHoisting was mangling alloca instructions in the entry block. These should be handled by FrameLowering, so constants actually have a cost of 0. Worse, the resulting bitcasts meant they became dynamic allocas. rdar://25707382 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266260 91177308-0d34-0410-b5e6-96231b3b80d8		2016-04-13 23:08:27 +00:00
..
AArch64	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
ARM	ARM: override cost function to re-enable ConstantHoisting (& fix it).	2016-04-13 23:08:27 +00:00
PowerPC	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
X86	[opaque pointer type] Add textual IR support for explicit type parameter to the call instruction	2015-04-16 23:24:18 +00:00