Reviewers: danno, Benedikt Meurer, paul.l..., gergely.kis.imgtec,
akos.palfi.imgtec, dusmil.imgtec,
Description:
MIPS: [turbofan] Complete support for integer division/modulus in simplified
lowering.
Port r24942 (c5055ce)
Original commit message:
Also add backend flags that tell whether integer division/modulus is
generally safe, i.e. does not trap on overflow or divide by zero.
TEST=unittests
BUG=
Please review this at https://codereview.chromium.org/679393003/
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+5, -1 lines):
M src/compiler/mips/instruction-selector-mips.cc
Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc
b/src/compiler/mips/instruction-selector-mips.cc
index
dc1749ad1898eb58234e185f2ebaaee19d00cde3..9be6bb6d66f8d0d1020d8d2b27040255cf345839
100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -651,8 +651,12 @@ void
InstructionSelector::VisitFloat64LessThanOrEqual(Node* node) {
// static
MachineOperatorBuilder::Flags
InstructionSelector::SupportedMachineOperatorFlags() {
- return MachineOperatorBuilder::Flag::kNoFlags;
+ return MachineOperatorBuilder::kInt32DivIsSafe |
+ MachineOperatorBuilder::kInt32ModIsSafe |
+ MachineOperatorBuilder::kUint32DivIsSafe |
+ MachineOperatorBuilder::kUint32ModIsSafe;
}
+
} // namespace compiler
} // namespace internal
} // namespace v8
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