Chromium Code Reviews

Unified Diff: src/mips/lithium-mips.cc

Issue 14159015: MIPS: Improvements in lithium code generation. Recognizing if some operands are constants, we can o… (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 8 months ago
Use n/p to move between diff chunks; N/P to move between comments.
Jump to:
View side-by-side diff with in-line comments
« no previous file with comments | « src/mips/lithium-codegen-mips.cc ('k') | no next file » | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index fb8826b7f358eb0638205fd150593077c2d64b38..41487f6d744149a3702f066707ad4f1e75ba6b66 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -2340,8 +2340,15 @@ LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) {
LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) {
info()->MarkAsRequiresFrame();
LOperand* args = UseRegister(instr->arguments());
- LOperand* length = UseTempRegister(instr->length());
- LOperand* index = UseRegister(instr->index());
+ LOperand* length;
+ LOperand* index;
+ if (instr->length()->IsConstant() && instr->index()->IsConstant()) {
+ length = UseRegisterOrConstant(instr->length());
+ index = UseOrConstant(instr->index());
+ } else {
+ length = UseTempRegister(instr->length());
+ index = Use(instr->index());
+ }
return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index));
}
« no previous file with comments | « src/mips/lithium-codegen-mips.cc ('k') | no next file » | no next file with comments »

Powered by Google App Engine