runtime/vm/flow_graph_compiler_mips.cc - Issue 62443002: VM: Fix double comparisons using != and NaN in optimized code.

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Unified Diff: runtime/vm/flow_graph_compiler_mips.cc

Issue 62443002: VM: Fix double comparisons using != and NaN in optimized code. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/

Patch Set: Created 7 years, 1 month ago

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Index: runtime/vm/flow_graph_compiler_mips.cc

===================================================================

--- runtime/vm/flow_graph_compiler_mips.cc (revision 29983)

+++ runtime/vm/flow_graph_compiler_mips.cc (working copy)

@@ -1710,11 +1710,12 @@

FpuRegister left,

FpuRegister right,

- Label done;

+ Label done, is_true;

+ Label* nan_label = (true_condition == NE) ? &is_true : &done;

__ Comment("DoubleCompareBool");

assembler()->LoadObject(result, Bool::False());

assembler()->cund(left, right);

- assembler()->bc1t(&done);

+ assembler()->bc1t(nan_label);

switch (true_condition) {

case EQ: assembler()->ceqd(left, right); break;

@@ -1735,6 +1736,7 @@

} else {

assembler()->bc1f(&done);

}

+ assembler()->Bind(&is_true);

assembler()->LoadObject(result, Bool::True());

assembler()->Bind(&done);

}

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