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Two changes relevant to LEA and x32:

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1) allows the use of RIP-relative addressing in 32-bit LEA instructions under
   x86-64 (ILP32 and LP64)
2) separates the size of address registers in 64-bit LEA instructions from
   control by ILP32/LP64.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174208 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Sehr
2013-02-01 19:28:09 +00:00
parent 5882e566a5
commit 693c37aa86
5 changed files with 58 additions and 3 deletions
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3
lib/Target/X86/X86MCInstLower.cpp
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@@ -239,7 +239,8 @@ static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) {
if (!MI->getOperand(OpNo+i).isReg()) continue;
unsigned Reg = MI->getOperand(OpNo+i).getReg();
if (Reg == 0) continue;
// LEAs can use RIP-relative addressing, and RIP has no sub/super register.
if (Reg == 0 || Reg == X86::RIP) continue;
MI->getOperand(OpNo+i).setReg(getX86SubSuperRegister(Reg, MVT::i64));
}