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Unified Diff: src/arm/macro-assembler-arm.cc

Issue 10197010: Optimise Math.floor(x/y) to use integer division for specific divisor. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 8 years, 8 months ago
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Index: src/arm/macro-assembler-arm.cc
===================================================================
--- src/arm/macro-assembler-arm.cc (revision 11426)
+++ src/arm/macro-assembler-arm.cc (working copy)
@@ -3710,15 +3710,28 @@
}
-bool AreAliased(Register r1, Register r2, Register r3, Register r4) {
- if (r1.is(r2)) return true;
- if (r1.is(r3)) return true;
- if (r1.is(r4)) return true;
- if (r2.is(r3)) return true;
- if (r2.is(r4)) return true;
- if (r3.is(r4)) return true;
- return false;
+#ifdef DEBUG
+bool AreAliased(Register reg1,
+ Register reg2,
+ Register reg3,
+ Register reg4,
+ Register reg5,
+ Register reg6) {
+ int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() +
+ reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid();
+
+ RegList regs = 0;
+ if (reg1.is_valid()) regs |= reg1.bit();
+ if (reg2.is_valid()) regs |= reg2.bit();
+ if (reg3.is_valid()) regs |= reg3.bit();
+ if (reg4.is_valid()) regs |= reg4.bit();
+ if (reg5.is_valid()) regs |= reg5.bit();
+ if (reg6.is_valid()) regs |= reg6.bit();
+ int n_of_non_aliasing_regs = NumRegs(regs);
+
+ return n_of_valid_regs != n_of_non_aliasing_regs;
}
+#endif
CodePatcher::CodePatcher(byte* address, int instructions)
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