caio/clang-p2996
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[PowerPC] Prevent copying in loop variables (NFC)

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/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:5769:19: error: loop variable '[Reg, N]' creates a copy from type 'std::pair<unsigned int, llvm::SDValue> const' [-Werror,-Wrange-loop-construct]
  for (const auto [Reg, N] : RegsToPass)
                  ^
/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:5769:8: note: use reference type 'std::pair<unsigned int, llvm::SDValue> const &' to prevent copying
  for (const auto [Reg, N] : RegsToPass)
       ^~~~~~~~~~~~~~~~~~~~~
                  &
/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:6193:19: error: loop variable '[Reg, N]' creates a
copy from type 'std::pair<unsigned int, llvm::SDValue> const' [-Werror,-Wrange-loop-construct]
  for (const auto [Reg, N] : RegsToPass) {
                  ^
/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:6193:8: note: use reference type 'std::pair<unsigned int, llvm::SDValue> const &' to prevent copying
  for (const auto [Reg, N] : RegsToPass) {
       ^~~~~~~~~~~~~~~~~~~~~
                  &
/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:6806:19: error: loop variable '[Reg, N]' creates a copy from type 'std::pair<unsigned int, llvm::SDValue> const' [-Werror,-Wrange-loop-construct]
  for (const auto [Reg, N] : RegsToPass) {
                  ^
/data/llvm-project/llvm/lib/Target/PowerPC/PPCISelLowering.cpp:6806:8: note: use reference type 'std::pair<unsigned int, llvm::SDValue> const &' to prevent copying
  for (const auto [Reg, N] : RegsToPass) {
       ^~~~~~~~~~~~~~~~~~~~~
                  &
3 errors generated.
This commit is contained in:
Jie Fu
2025-06-29 10:21:00 +08:00
parent 6c2aa37fb1
commit 25d52fbf96
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@@ -5766,7 +5766,7 @@ buildCallOperands(SmallVectorImpl<SDValue> &Ops,
// Add argument registers to the end of the list so that they are known live
// into the call.
for (const auto [Reg, N] : RegsToPass)
for (const auto &[Reg, N] : RegsToPass)
Ops.push_back(DAG.getRegister(Reg, N.getValueType()));
// We cannot add R2/X2 as an operand here for PATCHPOINT, because there is
@@ -6190,7 +6190,7 @@ SDValue PPCTargetLowering::LowerCall_32SVR4(
// Build a sequence of copy-to-reg nodes chained together with token chain
// and flag operands which copy the outgoing args into the appropriate regs.
SDValue InGlue;
for (const auto [Reg, N] : RegsToPass) {
for (const auto &[Reg, N] : RegsToPass) {
Chain = DAG.getCopyToReg(Chain, dl, Reg, N, InGlue);
InGlue = Chain.getValue(1);
}
@@ -6803,7 +6803,7 @@ SDValue PPCTargetLowering::LowerCall_64SVR4(
// Build a sequence of copy-to-reg nodes chained together with token chain
// and flag operands which copy the outgoing args into the appropriate regs.
SDValue InGlue;
for (const auto [Reg, N] : RegsToPass) {
for (const auto &[Reg, N] : RegsToPass) {
Chain = DAG.getCopyToReg(Chain, dl, Reg, N, InGlue);
InGlue = Chain.getValue(1);
}