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[Mips] Reserve hardware register HWR2 #127775

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Merged
wzssyqa merged 2 commits into from
Feb 20, 2025
Merged

[Mips] Reserve hardware register HWR2 #127775

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9e210ca
[Mips] Reserve hardware register HWR2.
yingopq Feb 19, 2025
b82ca7f
Merge branch 'main' into Fix_test_fail_106318
yingopq Feb 20, 2025
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1 change: 1 addition & 0 deletions llvm/lib/Target/Mips/MipsRegisterInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,7 @@ getReservedRegs(const MachineFunction &MF) const {

// Reserve hardware registers.
Reserved.set(Mips::HWR29);
Reserved.set(Mips::HWR2);

// Reserve DSP control register.
Reserved.set(Mips::DSPPos);
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2 changes: 0 additions & 2 deletions llvm/test/CodeGen/Mips/readcyclecounter.ll
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Expand Up @@ -7,8 +7,6 @@
;RUN: llc -mtriple=mipsel -mcpu=mips2 < %s | FileCheck %s --check-prefix=MIPSEL_NOT_SUPPORTED
;RUN: llc -mtriple=mips64el -mcpu=mips3 < %s | FileCheck %s --check-prefix=MIPS64EL_NOT_SUPPORTED

; XFAIL: expensive_checks

declare i64 @llvm.readcyclecounter() nounwind readnone

define i64 @test_readcyclecounter() nounwind {
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