6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-09 11:25:55 +00:00
Code Issues Projects Releases Wiki Activity

* Materialize GlobalAddress and ExternalSym with MOV32ri rather than

Browse Source 
LEA32r.
* Do not lower GlobalAddress to TargetGlobalAddress. Let isel does it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25246 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2006-01-12 07:56:47 +00:00
parent bb48e33bcd
commit 002fe9baf2
2 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Target/X86/X86ISelLowering.cpp
View File

@@ -1723,8 +1723,8 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
DAG.getValueType(AVT), InFlag); DAG.getValueType(AVT), InFlag);
} }
case ISD::GlobalAddress: { case ISD::GlobalAddress: {
SDOperand Result;
GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal(); GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
SDOperand GVOp = DAG.getTargetGlobalAddress(GV, getPointerTy());
// For Darwin, external and weak symbols are indirect, so we want to load // For Darwin, external and weak symbols are indirect, so we want to load
// the value at address GV, not the value of GV itself. This means that // the value at address GV, not the value of GV itself. This means that
// the GlobalAddress must be in the base or index register of the address, // the GlobalAddress must be in the base or index register of the address,
@@ -1732,11 +1732,10 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
if (getTargetMachine(). if (getTargetMachine().
getSubtarget<X86Subtarget>().getIndirectExternAndWeakGlobals() && getSubtarget<X86Subtarget>().getIndirectExternAndWeakGlobals() &&
(GV->hasWeakLinkage() || GV->isExternal())) (GV->hasWeakLinkage() || GV->isExternal()))
return DAG.getLoad(MVT::i32, DAG.getEntryNode(), Result = DAG.getLoad(MVT::i32, DAG.getEntryNode(),
GVOp, DAG.getSrcValue(NULL)); DAG.getTargetGlobalAddress(GV, getPointerTy()),
else DAG.getSrcValue(NULL));
return GVOp; return Result;
break;
} }
} }
} }

7
lib/Target/X86/X86InstrInfo.td
View File

@@ -153,8 +153,7 @@ def brtarget : Operand<OtherVT>;
// Define X86 specific addressing mode. // Define X86 specific addressing mode.
def addr : ComplexPattern<i32, 4, "SelectAddr", []>; def addr : ComplexPattern<i32, 4, "SelectAddr", []>;
def leaaddr : ComplexPattern<i32, 4, "SelectLEAAddr", def leaaddr : ComplexPattern<i32, 4, "SelectLEAAddr",
[add, frameindex, constpool, [add, frameindex, constpool]>;
globaladdr, tglobaladdr, externalsym]>;
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// X86 Instruction Format Definitions. // X86 Instruction Format Definitions.
@@ -2958,6 +2957,10 @@ def RDTSC : I<0x31, RawFrm, (ops), "rdtsc", [(X86rdtsc)]>,
// Non-Instruction Patterns // Non-Instruction Patterns
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// GlobalAddress and ExternalSymbol
def : Pat<(i32 globaladdr:$dst), (MOV32ri globaladdr:$dst)>;
def : Pat<(i32 externalsym:$dst), (MOV32ri externalsym:$dst)>;
// Calls // Calls
def : Pat<(X86call tglobaladdr:$dst), def : Pat<(X86call tglobaladdr:$dst),
(CALLpcrel32 tglobaladdr:$dst)>; (CALLpcrel32 tglobaladdr:$dst)>;