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Revert part of 70929 that has to do with determining whether a SIB byte is needed. It causes a lot of x86_64 JIT failures.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70986 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-05-05 18:18:57 +00:00
parent 065f259ff5
commit ef1840173c
2 changed files with 3 additions and 3 deletions
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lib/Target/X86/X86CodeEmitter.cpp
+2 -2
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@@ -338,8 +338,8 @@ void Emitter::emitMemModRMByte(const MachineInstr &MI,
unsigned BaseReg = Base.getReg();
// Is a SIB byte needed?
if (IndexReg.getReg() == 0 && (!Is64BitMode || BaseReg != 0) &&
(BaseReg == 0 || getX86RegNum(BaseReg) != N86::ESP)) {
if ((!Is64BitMode || DispForReloc) && IndexReg.getReg() == 0 &&
(BaseReg == 0 || getX86RegNum(BaseReg) != N86::ESP)) {
if (BaseReg == 0) { // Just a displacement?
// Emit special case [disp32] encoding
MCE.emitByte(ModRMByte(0, RegOpcodeField, 5));