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Unified Diff: runtime/vm/assembler_ia32.cc

Issue 1383573002: VM: More compact code for pushing constant arguments on ia32/x64. (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: addressed comments Created 5 years, 3 months ago
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Index: runtime/vm/assembler_ia32.cc
diff --git a/runtime/vm/assembler_ia32.cc b/runtime/vm/assembler_ia32.cc
index 2da038334bc5822889d40e059e0692bb97139e26..7fe41932cbf5ff0315bfa902f3e74913b66f3ee2 100644
--- a/runtime/vm/assembler_ia32.cc
+++ b/runtime/vm/assembler_ia32.cc
@@ -96,8 +96,13 @@ void Assembler::pushl(const Address& address) {
void Assembler::pushl(const Immediate& imm) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
- EmitUint8(0x68);
- EmitImmediate(imm);
+ if (imm.is_int8()) {
+ EmitUint8(0x6A);
+ EmitUint8(imm.value() & 0xFF);
+ } else {
+ EmitUint8(0x68);
+ EmitImmediate(imm);
+ }
}
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