[PATCH] D54255: [MIPS GlobalISel] narrowScalar G_CONSTANT
Petar Avramovic via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Nov 9 06:24:56 PST 2018
This revision was automatically updated to reflect the committed changes.
Closed by commit rL346495: [MIPS GlobalISel] narrowScalar G_CONSTANT (authored by Petar.Avramovic, committed by ).
Herald added subscribers: llvm-commits, jrtc27.
Changed prior to commit:
https://reviews.llvm.org/D54255?vs=173140&id=173313#toc
Repository:
rL LLVM
https://reviews.llvm.org/D54255
Files:
llvm/trunk/lib/Target/Mips/MipsLegalizerInfo.cpp
Index: llvm/trunk/lib/Target/Mips/MipsLegalizerInfo.cpp
===================================================================
--- llvm/trunk/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ llvm/trunk/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -41,8 +41,7 @@
getActionDefinitionsBuilder(G_CONSTANT)
.legalFor({s32})
- .minScalar(0, s32)
- .customFor({s64});
+ .clampScalar(0, s32, s32);
getActionDefinitionsBuilder(G_GEP)
.legalFor({{p0, s32}});
@@ -93,27 +92,6 @@
MI.eraseFromParent();
break;
}
- case G_CONSTANT: {
-
- unsigned Size = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
- const LLT sHalf = LLT::scalar(Size / 2);
-
- const APInt &CImmValue = MI.getOperand(1).getCImm()->getValue();
-
- unsigned ResLow = MRI.createGenericVirtualRegister(sHalf);
- unsigned ResHigh = MRI.createGenericVirtualRegister(sHalf);
- MIRBuilder.buildConstant(
- ResLow, *ConstantInt::get(MI.getMF()->getFunction().getContext(),
- CImmValue.trunc(Size / 2)));
- MIRBuilder.buildConstant(
- ResHigh, *ConstantInt::get(MI.getMF()->getFunction().getContext(),
- CImmValue.lshr(Size / 2).trunc(Size / 2)));
-
- MIRBuilder.buildMerge(MI.getOperand(0).getReg(), {ResLow, ResHigh});
-
- MI.eraseFromParent();
- break;
- }
default:
return false;
}
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