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PPC: Minor improvements to MathMaxMin.

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R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1663133002

Cr-Commit-Position: refs/heads/master@{#33711}
This commit is contained in:
mbrandy 2016-02-03 12:44:00 -08:00 committed by Commit bot
parent 32b484efc4
commit bb1d2817f8
1 changed files with 6 additions and 8 deletions
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14
src/ppc/builtins-ppc.cc
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@ -156,10 +156,10 @@ void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
// Setup state for loop
// r5: address of arg[0] + kPointerSize
// r6: number of arguments
// r6: number of slots to drop at exit (arguments + receiver)
__ ShiftLeftImm(r5, r3, Operand(kPointerSizeLog2));
__ add(r5, sp, r5);
__ mr(r6, r3);
__ addi(r6, r3, Operand(1));
Label done_loop, loop;
__ bind(&loop);
@ -189,12 +189,10 @@ void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
__ SmiUntag(r6);
{
// Restore the double accumulator value (d1).
Label restore_smi, done_restore;
__ JumpIfSmi(r4, &restore_smi);
__ lfd(d1, FieldMemOperand(r4, HeapNumber::kValueOffset));
__ b(&done_restore);
__ bind(&restore_smi);
Label done_restore;
__ SmiToDouble(d1, r4);
__ JumpIfSmi(r4, &done_restore);
__ lfd(d1, FieldMemOperand(r4, HeapNumber::kValueOffset));
__ bind(&done_restore);
}
}
@ -235,7 +233,7 @@ void Builtins::Generate_MathMaxMin(MacroAssembler* masm, MathMaxMinKind kind) {
__ bind(&done_loop);
__ mr(r3, r4);
__ Drop(r6);
__ Ret(1);
__ Ret();
}
// static