MIPS: Make HTypeofIsAndBranch accept any representation input

Port r17834 (cf97fcb6)

Original commit message:
Make HTypeofIsAndBranch accept any representation input
when the input is known unbox number value, eliminate the dynamic check

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/75943002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17852 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 1635b77..09bae59 100644 (file)
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -2501,6 +2501,9 @@ LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) {
 
 
 LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) {
+  LInstruction* goto_instr = CheckElideControlInstruction(instr);
+  if (goto_instr != NULL) return goto_instr;
+
   return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value()));
 }