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split out an encoder for memri operands, allowing a relocation to be plopped

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into the immediate field.  This allows us to encode stuff like this:

        lbz r3, lo16(__ZL4init)(r4)     ; globalopt.cpp:5
                                        ; encoding: [0x88,0x64,A,A]
                                        ;   fixup A - offset: 0, value: lo16(__ZL4init), kind: fixup_ppc_lo16

        stw r3, lo16(__ZL1s)(r5)        ; globalopt.cpp:6
                                        ; encoding: [0x90,0x65,A,A]
                                        ;   fixup A - offset: 0, value: lo16(__ZL1s), kind: fixup_ppc_lo16

With this, we should have a completely function MCCodeEmitter for PPC, wewt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119134 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-11-15 08:22:03 +00:00
parent 17e2c18835
commit b7035d0442
5 changed files with 68 additions and 58 deletions
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6
lib/Target/PowerPC/PPCInstr64Bit.td
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@@ -493,7 +493,7 @@ def LWAX : XForm_1<31, 341, (outs G8RC:$rD), (ins memrr:$src),
// Update forms.
let mayLoad = 1 in
def LHAU8 : DForm_1<43, (outs G8RC:$rD, ptr_rc:$ea_result), (ins symbolLo:$disp,
def LHAU8 : DForm_1a<43, (outs G8RC:$rD, ptr_rc:$ea_result), (ins symbolLo:$disp,
ptr_rc:$rA),
"lhau $rD, $disp($rA)", LdStGeneral,
[]>, RegConstraint<"$rA = $ea_result">,
@@ -614,14 +614,14 @@ def STDX : XForm_8<31, 149, (outs), (ins G8RC:$rS, memrr:$dst),
let PPC970_Unit = 2 in {
def STBU8 : DForm_1<38, (outs ptr_rc:$ea_res), (ins G8RC:$rS,
def STBU8 : DForm_1a<38, (outs ptr_rc:$ea_res), (ins G8RC:$rS,
symbolLo:$ptroff, ptr_rc:$ptrreg),
"stbu $rS, $ptroff($ptrreg)", LdStGeneral,
[(set ptr_rc:$ea_res,
(pre_truncsti8 G8RC:$rS, ptr_rc:$ptrreg,
iaddroff:$ptroff))]>,
RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
def STHU8 : DForm_1<45, (outs ptr_rc:$ea_res), (ins G8RC:$rS,
def STHU8 : DForm_1a<45, (outs ptr_rc:$ea_res), (ins G8RC:$rS,
symbolLo:$ptroff, ptr_rc:$ptrreg),
"sthu $rS, $ptroff($ptrreg)", LdStGeneral,
[(set ptr_rc:$ea_res,