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Bug 1918153: Use signalling instruction for branchNegPtr. r=jandem

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Differential Revision: https://phabricator.services.mozilla.com/D221856
This commit is contained in:
André Bargull
2024-09-12 13:06:53 +00:00
parent 6bdb6cbcc8
commit 59ccacb6ed
2 changed files with 4 additions and 1 deletions
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2
js/src/jit/arm64/MacroAssembler-arm64-inl.h
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@@ -1598,7 +1598,7 @@ void MacroAssembler::branchMulPtr(Condition cond, Register src, Register dest,
void MacroAssembler::branchNegPtr(Condition cond, Register reg, Label* label) { void MacroAssembler::branchNegPtr(Condition cond, Register reg, Label* label) {
MOZ_ASSERT(cond == Overflow); MOZ_ASSERT(cond == Overflow);
negPtr(reg); negs64(reg);
B(label, cond); B(label, cond);
} }

3
js/src/jit/arm64/MacroAssembler-arm64.h
View File

@@ -1300,6 +1300,9 @@ class MacroAssemblerCompat : public vixl::MacroAssembler {
void negs32(Register reg) { void negs32(Register reg) {
Negs(ARMRegister(reg, 32), Operand(ARMRegister(reg, 32))); Negs(ARMRegister(reg, 32), Operand(ARMRegister(reg, 32)));
} }
void negs64(Register reg) {
Negs(ARMRegister(reg, 64), Operand(ARMRegister(reg, 64)));
}
void ret() { void ret() {
pop(lr); pop(lr);