[all-commits] [llvm/llvm-project] 40e965: [RISCV] Use tail agnostic policy when selecting ri...
Craig Topper via All-commits
all-commits at lists.llvm.org
Thu May 12 09:10:04 PDT 2022
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 40e965451151dadc46c3f41249edf4651015fda4
https://github.com/llvm/llvm-project/commit/40e965451151dadc46c3f41249edf4651015fda4
Author: Craig Topper <craig.topper at sifive.com>
Date: 2022-05-12 (Thu, 12 May 2022)
Changed paths:
M llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vfma-vp.ll
M llvm/test/CodeGen/RISCV/rvv/sink-splat-operands.ll
M llvm/test/CodeGen/RISCV/rvv/vfma-vp.ll
Log Message:
-----------
[RISCV] Use tail agnostic policy when selecting riscv_fma_vl to instructions
riscv_fma_vl doesn't have a tail, so use the tail_agnostic policy.
We were already doing this for some patterns. I think the patterns
with fneg and mask were added later and I copied the tail policy
from the unmasked patterns.
Reviewed By: khchen
Differential Revision: https://reviews.llvm.org/D125424
Commit: cec249c60dad84574fd53d2fbf158bfeef226777
https://github.com/llvm/llvm-project/commit/cec249c60dad84574fd53d2fbf158bfeef226777
Author: Craig Topper <craig.topper at sifive.com>
Date: 2022-05-12 (Thu, 12 May 2022)
Changed paths:
M llvm/lib/CodeGen/TypePromotion.cpp
M llvm/test/CodeGen/AArch64/typepromotion-phisret.ll
M llvm/test/Transforms/TypePromotion/AArch64/trunc-zext-chain.ll
M llvm/test/Transforms/TypePromotion/ARM/phis-ret.ll
Log Message:
-----------
[TypePromotion] Promote undef by converting to 0.
If we're promoting an undef I think that means that we expect the
upper bits are zero. undef doesn't guarantee that.
This patch replaces undef with 0 to ensure this. This matches how
a zext or sext of undef would be folded by InstCombine/InstSimplify.
I haven't found a failure from this was just thinking through the code.
Differential Revision: https://reviews.llvm.org/D123174
Compare: https://github.com/llvm/llvm-project/compare/0f292141aadb...cec249c60dad
More information about the All-commits
mailing list