summaryrefslogtreecommitdiffstats
path: root/js/src/jit/x86/Lowering-x86.h
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/jit/x86/Lowering-x86.h')
-rw-r--r--js/src/jit/x86/Lowering-x86.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/js/src/jit/x86/Lowering-x86.h b/js/src/jit/x86/Lowering-x86.h
new file mode 100644
index 000000000..af823bad2
--- /dev/null
+++ b/js/src/jit/x86/Lowering-x86.h
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_x86_Lowering_x86_h
+#define jit_x86_Lowering_x86_h
+
+#include "jit/x86-shared/Lowering-x86-shared.h"
+
+namespace js {
+namespace jit {
+
+class LIRGeneratorX86 : public LIRGeneratorX86Shared
+{
+ public:
+ LIRGeneratorX86(MIRGenerator* gen, MIRGraph& graph, LIRGraph& lirGraph)
+ : LIRGeneratorX86Shared(gen, graph, lirGraph)
+ { }
+
+ protected:
+ // Returns a box allocation with type set to reg1 and payload set to reg2.
+ LBoxAllocation useBoxFixed(MDefinition* mir, Register reg1, Register reg2,
+ bool useAtStart = false);
+
+ // It's a trap! On x86, the 1-byte store can only use one of
+ // {al,bl,cl,dl,ah,bh,ch,dh}. That means if the register allocator
+ // gives us one of {edi,esi,ebp,esp}, we're out of luck. (The formatter
+ // will assert on us.) Ideally, we'd just ask the register allocator to
+ // give us one of {al,bl,cl,dl}. For now, just useFixed(al).
+ LAllocation useByteOpRegister(MDefinition* mir);
+ LAllocation useByteOpRegisterAtStart(MDefinition* mir);
+ LAllocation useByteOpRegisterOrNonDoubleConstant(MDefinition* mir);
+ LDefinition tempByteOpRegister();
+
+ inline LDefinition tempToUnbox() {
+ return LDefinition::BogusTemp();
+ }
+
+ bool needTempForPostBarrier() { return true; }
+
+ void lowerUntypedPhiInput(MPhi* phi, uint32_t inputPosition, LBlock* block, size_t lirIndex);
+ void defineUntypedPhi(MPhi* phi, size_t lirIndex);
+
+ void lowerInt64PhiInput(MPhi* phi, uint32_t inputPosition, LBlock* block, size_t lirIndex);
+ void defineInt64Phi(MPhi* phi, size_t lirIndex);
+
+ void lowerForALUInt64(LInstructionHelper<INT64_PIECES, 2 * INT64_PIECES, 0>* ins,
+ MDefinition* mir, MDefinition* lhs, MDefinition* rhs);
+ void lowerForMulInt64(LMulI64* ins, MMul* mir, MDefinition* lhs, MDefinition* rhs);
+
+ void lowerDivI64(MDiv* div);
+ void lowerModI64(MMod* mod);
+ void lowerUDivI64(MDiv* div);
+ void lowerUModI64(MMod* mod);
+
+ public:
+ void visitBox(MBox* box);
+ void visitUnbox(MUnbox* unbox);
+ void visitReturn(MReturn* ret);
+ void visitCompareExchangeTypedArrayElement(MCompareExchangeTypedArrayElement* ins);
+ void visitAtomicExchangeTypedArrayElement(MAtomicExchangeTypedArrayElement* ins);
+ void visitAtomicTypedArrayElementBinop(MAtomicTypedArrayElementBinop* ins);
+ void visitWasmUnsignedToDouble(MWasmUnsignedToDouble* ins);
+ void visitWasmUnsignedToFloat32(MWasmUnsignedToFloat32* ins);
+ void visitAsmJSLoadHeap(MAsmJSLoadHeap* ins);
+ void visitAsmJSStoreHeap(MAsmJSStoreHeap* ins);
+ void visitAsmJSCompareExchangeHeap(MAsmJSCompareExchangeHeap* ins);
+ void visitAsmJSAtomicExchangeHeap(MAsmJSAtomicExchangeHeap* ins);
+ void visitAsmJSAtomicBinopHeap(MAsmJSAtomicBinopHeap* ins);
+ void visitWasmLoad(MWasmLoad* ins);
+ void visitWasmStore(MWasmStore* ins);
+ void visitStoreTypedArrayElementStatic(MStoreTypedArrayElementStatic* ins);
+ void visitSubstr(MSubstr* ins);
+ void visitRandom(MRandom* ins);
+ void visitWasmTruncateToInt64(MWasmTruncateToInt64* ins);
+ void visitInt64ToFloatingPoint(MInt64ToFloatingPoint* ins);
+ void visitExtendInt32ToInt64(MExtendInt32ToInt64* ins);
+ void lowerPhi(MPhi* phi);
+
+ static bool allowTypedElementHoleCheck() {
+ return true;
+ }
+
+ static bool allowStaticTypedArrayAccesses() {
+ return true;
+ }
+};
+
+typedef LIRGeneratorX86 LIRGeneratorSpecific;
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_x86_Lowering_x86_h */