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| author | Erik Verbruggen <erik.verbruggen@qt.io> | 2017-06-07 11:35:20 +0200 |
|---|---|---|
| committer | Erik Verbruggen <erik.verbruggen@qt.io> | 2017-06-07 14:32:02 +0000 |
| commit | d2c09b41ddc82dda5c5228b1f295850bb1c58f4c (patch) | |
| tree | 1b1d0518119805a0396395b89e8acd9cd1fcf098 /src/qml | |
| parent | a6eac7e299016c9ee8742abffd780683adac3066 (diff) | |
Jit: fix unary minus for integers
Change-Id: Ib2cdfe6f09528d169e9ea6f8b872de875317c9c9
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src/qml')
| -rw-r--r-- | src/qml/jit/qv4unop.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/qml/jit/qv4unop.cpp b/src/qml/jit/qv4unop.cpp index 896be07ed5..78546e1509 100644 --- a/src/qml/jit/qv4unop.cpp +++ b/src/qml/jit/qv4unop.cpp @@ -83,6 +83,15 @@ template <typename JITAssembler> void Unop<JITAssembler>::generateUMinus(IR::Expr *source, IR::Expr *target) { IR::Temp *targetTemp = target->asTemp(); + + if (IR::Const *c = source->asConst()) { + if (c->value == 0 && source->type == IR::SInt32Type) { + // special case: minus integer 0 is 0, which is not what JS expects it to be, so always + // do a runtime call + generateRuntimeCall(_as, target, uMinus, PointerToValue(source)); + return; + } + } if (source->type == IR::SInt32Type) { typename JITAssembler::RegisterID tReg = JITAssembler::ScratchRegister; if (targetTemp && targetTemp->kind == IR::Temp::PhysicalRegister) |