diff options
| author | David Sehr <sehr@google.com> | 2013-02-01 19:28:09 +0000 |
|---|---|---|
| committer | David Sehr <sehr@google.com> | 2013-02-01 19:28:09 +0000 |
| commit | 693c37aa86506be657dfaf8835845b0998531c3c (patch) | |
| tree | 29bc68f7cb3d3c5aa700ac095fa91fb945e2ac8d /lib/Target/X86/X86MCInstLower.cpp | |
| parent | 5882e566a560691bef3eb817f6390ee93242b6a6 (diff) | |
Two changes relevant to LEA and x32:
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
Diffstat (limited to 'lib/Target/X86/X86MCInstLower.cpp')
| -rw-r--r-- | lib/Target/X86/X86MCInstLower.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp index 5a1e1b8dc9..3af1b3e06b 100644 --- a/lib/Target/X86/X86MCInstLower.cpp +++ b/lib/Target/X86/X86MCInstLower.cpp @@ -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)); } |