Add a few obvious strength-reductions to Air
https://bugs.webkit.org/show_bug.cgi?id=151777
Reviewed by Mark Lam.
The absence of these optimizations was obnoxious.
* assembler/MacroAssemblerX86Common.h:
(JSC::MacroAssemblerX86Common::add32): lea 1(reg), reg -> add 1, reg.
* b3/air/AirGenerate.cpp:
(JSC::B3::Air::generate): Emit simpler prologue/epilogue if !frameSize.
* b3/air/AirOpcode.opcodes: We have matching for BranchMul32 with immediate, but we forgot to add the instruction form.
* jit/AssemblyHelpers.h: Support for the prologue/epilogue optimizations.
(JSC::AssemblyHelpers::emitFunctionPrologue):
(JSC::AssemblyHelpers::emitFunctionEpilogueWithEmptyFrame):
(JSC::AssemblyHelpers::emitFunctionEpilogue):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@192981 268f45cc-cd09-0410-ab3c-d52691b4dbfc
5 files changed
