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X86: change MOV64ri64i32 into MOV32ri64

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The MOV64ri64i32 instruction required hacky MCInst lowering because it
was allocated as setting a GR64, but the eventual instruction ("movl")
only set a GR32. This converts it into a so-called "MOV32ri64" which
still accepts a (appropriate) 64-bit immediate but defines a GR32.
This is then converted to the full GR64 by a SUBREG_TO_REG operation,
thus keeping everyone happy.

This fixes a typo in the opcode field of the original patch, which
should make the legact JIT work again (& adds test for that problem).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183068 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover
2013-06-01 09:55:14 +00:00
parent 72ad17c48c
commit 85c622d6b6
6 changed files with 72 additions and 42 deletions
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2
lib/Target/X86/X86CodeEmitter.cpp
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@@ -1270,7 +1270,7 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
unsigned rt = Is64BitMode ? X86::reloc_pcrel_word
: (IsPIC ? X86::reloc_picrel_word : X86::reloc_absolute_word);
if (Opcode == X86::MOV64ri64i32)
if (Opcode == X86::MOV32ri64)
rt = X86::reloc_absolute_word; // FIXME: add X86II flag?
// This should not occur on Darwin for relocatable objects.
if (Opcode == X86::MOV64ri)