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| author | Erik Verbruggen <erik.verbruggen@me.com> | 2013-09-24 11:42:03 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-09-28 23:56:53 +0200 |
| commit | e4c696dda3610a7c6e34bf705656d90babc9d461 (patch) | |
| tree | 09617040cba956f8ec3874ec64762fa08dbe856d /src/qml/compiler/qv4isel_masm_p.h | |
| parent | 342831427beb0f3a48061453df89624ba2d7c886 (diff) | |
V4 JIT: optimize mem2mem copies.
Instead of loading and decoding a value and then encoding and storing
it, we can just as well fold that into a load+store.
Change-Id: I84c8eb310510a91cefe2cbc0d4bb01856b41663d
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'src/qml/compiler/qv4isel_masm_p.h')
| -rw-r--r-- | src/qml/compiler/qv4isel_masm_p.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/qml/compiler/qv4isel_masm_p.h b/src/qml/compiler/qv4isel_masm_p.h index a4550c63ed..86a4dd6304 100644 --- a/src/qml/compiler/qv4isel_masm_p.h +++ b/src/qml/compiler/qv4isel_masm_p.h @@ -808,6 +808,15 @@ public: template <typename Result> void copyValue(Result result, V4IR::Expr* source); + // The scratch register is used to calculate the temp address for the source. + void memcopyValue(Pointer target, V4IR::Temp *sourceTemp, RegisterID scratchRegister) + { + Q_ASSERT(sourceTemp->kind != V4IR::Temp::PhysicalRegister); + Q_ASSERT(target.base != scratchRegister); + JSC::MacroAssembler::loadDouble(loadTempAddress(scratchRegister, sourceTemp), FPGpr0); + JSC::MacroAssembler::storeDouble(FPGpr0, target); + } + void storeValue(QV4::Value value, RegisterID destination) { Q_UNUSED(value); |