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Revise MOVSX16rr8/MOVZX16rr8 (and rm variants) to no longer be

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pseudos.  rdar://problem/8614450


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131641 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stuart Hastings 2011-05-19 16:59:50 +00:00
parent 26847d40db
commit b6dcf3c514
3 changed files with 21 additions and 25 deletions
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23
lib/Target/X86/X86InstrCompiler.td
View File

@ -997,7 +997,8 @@ def : Pat<(extloadi64i32 addr:$src),
// anyext. Define these to do an explicit zero-extend to
// avoid partial-register updates.
def : Pat<(i16 (anyext GR8 :$src)), (MOVZX16rr8 GR8 :$src)>;
def : Pat<(i16 (anyext GR8 :$src)), (EXTRACT_SUBREG
(MOVZX32rr8 GR8 :$src), sub_16bit)>;
def : Pat<(i32 (anyext GR8 :$src)), (MOVZX32rr8 GR8 :$src)>;
// Except for i16 -> i32 since isel expect i16 ops to be promoted to i32.
@ -1164,9 +1165,9 @@ def : Pat<(and GR32:$src1, 0xff),
Requires<[In32BitMode]>;
// r & (2^8-1) ==> movz
def : Pat<(and GR16:$src1, 0xff),
(MOVZX16rr8 (EXTRACT_SUBREG (i16 (COPY_TO_REGCLASS GR16:$src1,
GR16_ABCD)),
sub_8bit))>,
(EXTRACT_SUBREG (MOVZX32rr8 (EXTRACT_SUBREG
(i16 (COPY_TO_REGCLASS GR16:$src1, GR16_ABCD)), sub_8bit)),
sub_16bit)>,
Requires<[In32BitMode]>;
// r & (2^32-1) ==> movz
@ -1184,7 +1185,8 @@ def : Pat<(and GR32:$src1, 0xff),
Requires<[In64BitMode]>;
// r & (2^8-1) ==> movz
def : Pat<(and GR16:$src1, 0xff),
(MOVZX16rr8 (i8 (EXTRACT_SUBREG GR16:$src1, sub_8bit)))>,
(EXTRACT_SUBREG (MOVZX32rr8 (i8
(EXTRACT_SUBREG GR16:$src1, sub_8bit))), sub_16bit)>,
Requires<[In64BitMode]>;
@ -1196,10 +1198,11 @@ def : Pat<(sext_inreg GR32:$src, i8),
GR32_ABCD)),
sub_8bit))>,
Requires<[In32BitMode]>;
def : Pat<(sext_inreg GR16:$src, i8),
(MOVSX16rr8 (EXTRACT_SUBREG (i16 (COPY_TO_REGCLASS GR16:$src,
GR16_ABCD)),
sub_8bit))>,
(EXTRACT_SUBREG (i32 (MOVSX32rr8 (EXTRACT_SUBREG
(i32 (COPY_TO_REGCLASS GR16:$src, GR16_ABCD)), sub_8bit))),
sub_16bit)>,
Requires<[In32BitMode]>;
def : Pat<(sext_inreg GR64:$src, i32),
@ -1212,10 +1215,10 @@ def : Pat<(sext_inreg GR32:$src, i8),
(MOVSX32rr8 (EXTRACT_SUBREG GR32:$src, sub_8bit))>,
Requires<[In64BitMode]>;
def : Pat<(sext_inreg GR16:$src, i8),
(MOVSX16rr8 (i8 (EXTRACT_SUBREG GR16:$src, sub_8bit)))>,
(EXTRACT_SUBREG (MOVSX32rr8
(EXTRACT_SUBREG GR16:$src, sub_8bit)), sub_16bit)>,
Requires<[In64BitMode]>;
// trunc patterns
def : Pat<(i16 (trunc GR32:$src)),
(EXTRACT_SUBREG GR32:$src, sub_16bit)>;

19
lib/Target/X86/X86InstrExtension.td
View File

@ -45,14 +45,12 @@ def MOVSX16rr8W : I<0xBE, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
"movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
def MOVSX16rm8W : I<0xBE, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
"movs{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
// FIXME: Use a pat pattern or define a syntax here.
let isCodeGenOnly=1 in {
def MOVSX16rr8 : I<0xBE, MRMSrcReg, (outs GR16:$dst), (ins GR8 :$src),
"", [(set GR16:$dst, (sext GR8:$src))]>, TB;
"movs{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR16:$dst, (sext GR8:$src))]>, TB;
def MOVSX16rm8 : I<0xBE, MRMSrcMem, (outs GR16:$dst), (ins i8mem :$src),
"", [(set GR16:$dst, (sextloadi16i8 addr:$src))]>, TB;
}
"movs{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR16:$dst, (sextloadi16i8 addr:$src))]>, TB;
def MOVSX32rr8 : I<0xBE, MRMSrcReg, (outs GR32:$dst), (ins GR8 :$src),
"movs{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR32:$dst, (sext GR8:$src))]>, TB;
@ -73,13 +71,12 @@ def MOVZX16rr8W : I<0xB6, MRMSrcReg, (outs GR16:$dst), (ins GR8:$src),
"movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
def MOVZX16rm8W : I<0xB6, MRMSrcMem, (outs GR16:$dst), (ins i8mem:$src),
"movz{bw|x}\t{$src, $dst|$dst, $src}", []>, TB, OpSize;
// FIXME: Use a pat pattern or define a syntax here.
let isCodeGenOnly=1 in {
def MOVZX16rr8 : I<0xB6, MRMSrcReg, (outs GR16:$dst), (ins GR8 :$src),
"", [(set GR16:$dst, (zext GR8:$src))]>, TB;
"movz{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR16:$dst, (zext GR8:$src))]>, TB;
def MOVZX16rm8 : I<0xB6, MRMSrcMem, (outs GR16:$dst), (ins i8mem :$src),
"", [(set GR16:$dst, (zextloadi16i8 addr:$src))]>, TB;
}
"movz{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR16:$dst, (zextloadi16i8 addr:$src))]>, TB;
def MOVZX32rr8 : I<0xB6, MRMSrcReg, (outs GR32:$dst), (ins GR8 :$src),
"movz{bl|x}\t{$src, $dst|$dst, $src}",
[(set GR32:$dst, (zext GR8:$src))]>, TB;

4
lib/Target/X86/X86MCInstLower.cpp
View File

@ -355,10 +355,6 @@ ReSimplify:
assert(OutMI.getOperand(1+X86::AddrSegmentReg).getReg() == 0 &&
"LEA has segment specified!");
break;
case X86::MOVZX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr8); break;
case X86::MOVZX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break;
case X86::MOVSX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rr8); break;
case X86::MOVSX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rm8); break;
case X86::MOVZX64rr32: LowerSubReg32_Op0(OutMI, X86::MOV32rr); break;
case X86::MOVZX64rm32: LowerSubReg32_Op0(OutMI, X86::MOV32rm); break;
case X86::MOV64ri64i32: LowerSubReg32_Op0(OutMI, X86::MOV32ri); break;