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mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-24 05:23:45 +02:00
llvm-mirror/test/CodeGen
Hal Finkel 0a750c5cd8 [PowerPC] Mark zext of a small scalar load as free
This initial implementation of PPCTargetLowering::isZExtFree marks as free
zexts of small scalar loads (that are not sign-extending). This callback is
used by SelectionDAGBuilder's RegsForValue::getCopyToRegs, and thus to
determine whether a zext or an anyext is used to lower illegally-typed PHIs.
Because later truncates of zero-extended values are nops, this allows for the
elimination of later unnecessary truncations.

Fixes the initial complaint associated with PR22120.

llvm-svn: 225584
2015-01-10 08:21:59 +00:00
..
AArch64 Revert r225165 and r225169 2015-01-07 06:34:34 +00:00
ARM Fix large stack alignment codegen for ARM and Thumb2 targets 2015-01-08 15:09:14 +00:00
CPP
Generic CodeGen: do not attempt to invalidate virtual registers for zero-sized phis. 2014-12-19 20:50:07 +00:00
Hexagon [Hexagon] Adding dealloc_return encoding and absolute address stores. 2015-01-06 16:15:15 +00:00
Inputs IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
Mips [mips] Add support for accessing $gp as a named register. 2015-01-09 17:21:30 +00:00
MSP430
NVPTX [NVPTX] Fix bugs related to isSingleValueType 2014-12-17 17:59:04 +00:00
PowerPC [PowerPC] Mark zext of a small scalar load as free 2015-01-10 08:21:59 +00:00
R600 R600/SI: Remove SIISelLowering::legalizeOperands() 2015-01-08 15:08:17 +00:00
SPARC IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
SystemZ IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
Thumb IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
Thumb2 [ARM] Fix a bug in constant island pass that was triggering an assertion. 2015-01-08 20:44:50 +00:00
X86 [X86][SSE] Avoid vector byte shuffles with zero by using pshufb to create zeros 2015-01-09 22:03:19 +00:00
XCore IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00