Jonas Paulsson 7777cbe23a [SystemZ::TTI] Return zero cost for ICmp that becomes Load And Test. ...

A loaded value with multiple users compared with 0 will become a load and
test single instruction. The load is not folded in this case (multiple
users), but the compare instruction is eliminated.

This patch returns 0 cost for the icmp in these cases.

Review: Ulrich Weigand
https://reviews.llvm.org/D55111

llvm-svn: 348141

2018-12-03 14:30:18 +00:00

..

AArch64

[TTI] Reduction costs only need to include a single extract element cost (REAPPLIED)

2018-12-01 14:18:31 +00:00

AMDGPU

[AMDGPU] Switch to the new addr space mapping by default

2018-02-02 16:07:16 +00:00

ARM

Add BROADCAST shuffle cost tests.

2018-10-23 13:00:22 +00:00

PowerPC

[PPC] Give unaligned memory access lower cost on processor that supports it

2017-02-17 22:29:39 +00:00

SystemZ

[SystemZ::TTI] Return zero cost for ICmp that becomes Load And Test.

2018-12-03 14:30:18 +00:00

X86

[TTI] Reduction costs only need to include a single extract element cost (REAPPLIED)

2018-12-01 14:18:31 +00:00

no_info.ll

Roll forward r243250

2015-07-26 19:10:03 +00:00