[Mips] Use getSignedConstant() for signed values #116405
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This also adds a getSignedTargetConstant() helper, as these seem to be fairly common in general.
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@llvm/pr-subscribers-llvm-selectiondag Author: Nikita Popov (nikic) ChangesThis also adds a getSignedTargetConstant() helper, as these seem to be fairly common in general. Full diff: https://github.com/llvm/llvm-project/pull/116405.diff 4 Files Affected:
diff --git a/llvm/include/llvm/CodeGen/SelectionDAG.h b/llvm/include/llvm/CodeGen/SelectionDAG.h
index 9035aa3ea31278..2e3507386df309 100644
--- a/llvm/include/llvm/CodeGen/SelectionDAG.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAG.h
@@ -700,6 +700,10 @@ class SelectionDAG {
bool isOpaque = false) {
return getConstant(Val, DL, VT, true, isOpaque);
}
+ SDValue getSignedTargetConstant(int64_t Val, const SDLoc &DL, EVT VT,
+ bool isOpaque = false) {
+ return getSignedConstant(Val, DL, VT, true, isOpaque);
+ }
/// Create a true or false constant of type \p VT using the target's
/// BooleanContent for type \p OpVT.
diff --git a/llvm/lib/Target/Mips/MipsISelDAGToDAG.h b/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
index 6135f968078542..0411a17b4f0669 100644
--- a/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
+++ b/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
@@ -134,6 +134,11 @@ class MipsDAGToDAGISel : public SelectionDAGISel {
return CurDAG->getTargetConstant(Imm, SDLoc(Node), Node->getValueType(0));
}
+ inline SDValue getSignedImm(const SDNode *Node, int64_t Imm) {
+ return CurDAG->getSignedTargetConstant(Imm, SDLoc(Node),
+ Node->getValueType(0));
+ }
+
virtual void processFunctionAfterISel(MachineFunction &MF) = 0;
bool SelectInlineAsmMemoryOperand(const SDValue &Op,
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index f1cc9fd958447a..ef2c89f49e875a 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -2362,9 +2362,9 @@ SDValue MipsTargetLowering::lowerVAARG(SDValue Op, SelectionDAG &DAG) const {
ISD::ADD, DL, VAList.getValueType(), VAList,
DAG.getConstant(Align.value() - 1, DL, VAList.getValueType()));
- VAList = DAG.getNode(
- ISD::AND, DL, VAList.getValueType(), VAList,
- DAG.getConstant(-(int64_t)Align.value(), DL, VAList.getValueType()));
+ VAList = DAG.getNode(ISD::AND, DL, VAList.getValueType(), VAList,
+ DAG.getSignedConstant(-(int64_t)Align.value(), DL,
+ VAList.getValueType()));
}
// Increment the pointer, VAList, to the next vaarg.
@@ -4291,7 +4291,7 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
EVT Type = Op.getValueType();
int64_t Val = C->getSExtValue();
if (isInt<16>(Val)) {
- Result = DAG.getTargetConstant(Val, DL, Type);
+ Result = DAG.getSignedTargetConstant(Val, DL, Type);
break;
}
}
@@ -4321,7 +4321,7 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
EVT Type = Op.getValueType();
int64_t Val = C->getSExtValue();
if ((isInt<32>(Val)) && ((Val & 0xffff) == 0)){
- Result = DAG.getTargetConstant(Val, DL, Type);
+ Result = DAG.getSignedTargetConstant(Val, DL, Type);
break;
}
}
@@ -4331,7 +4331,7 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
EVT Type = Op.getValueType();
int64_t Val = C->getSExtValue();
if ((Val >= -65535) && (Val <= -1)) {
- Result = DAG.getTargetConstant(Val, DL, Type);
+ Result = DAG.getSignedTargetConstant(Val, DL, Type);
break;
}
}
@@ -4341,7 +4341,7 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
EVT Type = Op.getValueType();
int64_t Val = C->getSExtValue();
if ((isInt<15>(Val))) {
- Result = DAG.getTargetConstant(Val, DL, Type);
+ Result = DAG.getSignedTargetConstant(Val, DL, Type);
break;
}
}
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.td b/llvm/lib/Target/Mips/MipsInstrInfo.td
index 85e3e78d2a4d8f..557e6a2c72e273 100644
--- a/llvm/lib/Target/Mips/MipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.td
@@ -1199,7 +1199,9 @@ def HI16 : SDNodeXForm<imm, [{
}]>;
// Plus 1.
-def Plus1 : SDNodeXForm<imm, [{ return getImm(N, N->getSExtValue() + 1); }]>;
+def Plus1 : SDNodeXForm<imm, [{
+ return getSignedImm(N, N->getSExtValue() + 1);
+}]>;
// Node immediate is zero (e.g. insve.d)
def immz : PatLeaf<(imm), [{ return N->getSExtValue() == 0; }]>;
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cc @yingopq |
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LGTM |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/73/builds/8735 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/51/builds/6503 Here is the relevant piece of the build log for the reference |
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This also adds a getSignedTargetConstant() helper, as these seem to be fairly common in general.