Revision: 24611
Author: [email protected]
Date: Tue Oct 14 17:26:14 2014 UTC
Log: MIPS: [turbofan] Optimize division/modulus by constant.
Port r24595 (d0f464e)
TEST=cctest,mjsunit,unittests
BUG=
[email protected]
Review URL: https://codereview.chromium.org/651223003
https://code.google.com/p/v8/source/detail?r=24611
Modified:
/branches/bleeding_edge/src/compiler/mips/code-generator-mips.cc
/branches/bleeding_edge/src/compiler/mips/instruction-codes-mips.h
/branches/bleeding_edge/src/compiler/mips/instruction-selector-mips.cc
=======================================
--- /branches/bleeding_edge/src/compiler/mips/code-generator-mips.cc Tue
Oct 14 08:51:22 2014 UTC
+++ /branches/bleeding_edge/src/compiler/mips/code-generator-mips.cc Tue
Oct 14 17:26:14 2014 UTC
@@ -185,6 +185,9 @@
case kMipsMul:
__ Mul(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
break;
+ case kMipsMulHigh:
+ __ Mulh(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
+ break;
case kMipsDiv:
__ Div(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
break;
=======================================
--- /branches/bleeding_edge/src/compiler/mips/instruction-codes-mips.h Thu
Oct 2 15:48:48 2014 UTC
+++ /branches/bleeding_edge/src/compiler/mips/instruction-codes-mips.h Tue
Oct 14 17:26:14 2014 UTC
@@ -17,6 +17,7 @@
V(MipsSub) \
V(MipsSubOvf) \
V(MipsMul) \
+ V(MipsMulHigh) \
V(MipsDiv) \
V(MipsDivU) \
V(MipsMod) \
=======================================
--- /branches/bleeding_edge/src/compiler/mips/instruction-selector-mips.cc
Mon Oct 13 23:31:59 2014 UTC
+++ /branches/bleeding_edge/src/compiler/mips/instruction-selector-mips.cc
Tue Oct 14 17:26:14 2014 UTC
@@ -298,6 +298,13 @@
Emit(kMipsMul, g.DefineAsRegister(node), g.UseRegister(m.left().node()),
g.UseRegister(m.right().node()));
}
+
+
+void InstructionSelector::VisitInt32MulHigh(Node* node) {
+ MipsOperandGenerator g(this);
+ Emit(kMipsMulHigh, g.DefineAsRegister(node),
g.UseRegister(node->InputAt(0)),
+ g.UseRegister(node->InputAt(1)));
+}
void InstructionSelector::VisitInt32Div(Node* node) {
--
--
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