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Unified Diff: src/compiler/arm64/code-generator-arm64.cc

Issue 1526293002: [turbofan] Fixed a bug in TryTruncateFloatXXToInt64 with INT64_MIN. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Use constants with comments instead of type casts Created 5 years ago
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Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index e22c3441f38f5048a74b7b212ce666cc997b1bfe..8bb5042c0210aef0ff48bbda7494de2d6d668a65 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -1041,20 +1041,30 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
case kArm64Float32ToInt64:
__ Fcvtzs(i.OutputRegister64(), i.InputFloat32Register(0));
if (i.OutputCount() > 1) {
+ __ Mov(i.OutputRegister(1), 1);
+ Label done;
__ Cmp(i.OutputRegister(0), 1);
__ Ccmp(i.OutputRegister(0), -1, VFlag, vc);
__ Fccmp(i.InputFloat32Register(0), i.InputFloat32Register(0), VFlag,
vc);
- __ Cset(i.OutputRegister(1), vc);
+ __ B(vc, &done);
+ __ Fcmp(i.InputFloat32Register(0), static_cast<float>(INT64_MIN));
+ __ Cset(i.OutputRegister(1), eq);
+ __ Bind(&done);
}
break;
case kArm64Float64ToInt64:
__ Fcvtzs(i.OutputRegister(0), i.InputDoubleRegister(0));
if (i.OutputCount() > 1) {
+ __ Mov(i.OutputRegister(1), 1);
+ Label done;
__ Cmp(i.OutputRegister(0), 1);
__ Ccmp(i.OutputRegister(0), -1, VFlag, vc);
__ Fccmp(i.InputDoubleRegister(0), i.InputDoubleRegister(0), VFlag, vc);
- __ Cset(i.OutputRegister(1), vc);
+ __ B(vc, &done);
+ __ Fcmp(i.InputDoubleRegister(0), static_cast<double>(INT64_MIN));
+ __ Cset(i.OutputRegister(1), eq);
+ __ Bind(&done);
}
break;
case kArm64Float32ToUint64:
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