diff options
Diffstat (limited to 'zjit/src')
| -rw-r--r-- | zjit/src/backend/x86_64/mod.rs | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/zjit/src/backend/x86_64/mod.rs b/zjit/src/backend/x86_64/mod.rs index 18ef7d0c79..3888a52f46 100644 --- a/zjit/src/backend/x86_64/mod.rs +++ b/zjit/src/backend/x86_64/mod.rs @@ -202,9 +202,17 @@ impl Assembler asm.push_insn(Insn::Test { left: *left, right: *left }); } _ => { - if let (Opnd::Mem(_), Opnd::Mem(_)) = (&left, &right) { - let loaded = asm.load(*right); - *right = loaded; + // Split the instruction if `cmp` can't be encoded with given operands + match (&left, &right) { + // One of the operands should not be a memory operand + (Opnd::Mem(_), Opnd::Mem(_)) => { + *right = asm.load(*right); + } + // The left operand needs to be either a register or a memory operand + (Opnd::UImm(_) | Opnd::Imm(_), _) => { + *left = asm.load(*left); + } + _ => {}, } asm.push_insn(insn); } |