[llvm] c95361e - [RISCV][GISel] Remove legalIf from G_ZEXT, G_SEXT, G_ANYEXT.
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Mon Aug 14 15:02:17 PDT 2023
Author: Craig Topper
Date: 2023-08-14T14:56:30-07:00
New Revision: c95361e01e1533acb2545c299377a59ace9e6551
URL: https://github.com/llvm/llvm-project/commit/c95361e01e1533acb2545c299377a59ace9e6551
DIFF: https://github.com/llvm/llvm-project/commit/c95361e01e1533acb2545c299377a59ace9e6551.diff
LOG: [RISCV][GISel] Remove legalIf from G_ZEXT, G_SEXT, G_ANYEXT.
I think after making G_SEXT_INREG legal this isn't needed. At the
very least its not tested anymore.
Reviewed By: arsenm
Differential Revision: https://reviews.llvm.org/D157678
Added:
Modified:
llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
index 78fd8247c06526..fc51a731ba2126 100644
--- a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
@@ -44,29 +44,8 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
.clampScalar(1, XLenLLT, XLenLLT)
.clampScalar(0, XLenLLT, XLenLLT);
- // Extensions
- auto ExtLegalFunc = [=](const LegalityQuery &Query) {
- unsigned DstSize = Query.Types[0].getSizeInBits();
-
- // Make sure that we have something that will fit in a register, and
- // make sure it's a power of 2.
- if (DstSize < 8 || DstSize > XLen || !isPowerOf2_32(DstSize))
- return false;
-
- const LLT SrcTy = Query.Types[1];
-
- // Make sure we fit in a register otherwise. Don't bother checking that
- // the source type is below 2 * XLen bits. We shouldn't be allowing anything
- // through which is wider than the destination in the first place.
- unsigned SrcSize = SrcTy.getSizeInBits();
- if (SrcSize < 8 || !isPowerOf2_32(SrcSize))
- return false;
-
- return true;
- };
getActionDefinitionsBuilder({G_ZEXT, G_SEXT, G_ANYEXT})
- .legalIf(ExtLegalFunc)
- .clampScalar(0, XLenLLT, XLenLLT);
+ .maxScalar(0, XLenLLT);
getActionDefinitionsBuilder(G_SEXT_INREG)
.legalFor({XLenLLT})
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