diff options
| -rw-r--r-- | js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp index 38897de0d..839664b8c 100644 --- a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp +++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp @@ -236,8 +236,14 @@ template <typename L> void MacroAssemblerMIPSShared::ma_addTestCarry(Register rd, Register rs, Register rt, L overflow) { - as_addu(rd, rs, rt); - as_sltu(SecondScratchReg, rd, rs); + if (rd != rs) { + as_addu(rd, rs, rt); + as_sltu(SecondScratchReg, rd, rs); + } else { + ma_move(SecondScratchReg, rs); + as_addu(rd, rs, rt); + as_sltu(SecondScratchReg, rd, SecondScratchReg); + } ma_b(SecondScratchReg, SecondScratchReg, overflow, Assembler::NonZero); } |