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Add load + store folding srl and sra patterns.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24696 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2005-12-13 07:24:22 +00:00
parent d1239b7c69
commit 85dd889ed6
1 changed files with 32 additions and 12 deletions
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44
lib/Target/X86/X86InstrInfo.td
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@ -1062,17 +1062,27 @@ def SHR32ri : Ii8<0xC1, MRM5r, (ops R32:$dst, R32:$src1, i8imm:$src2),
let isTwoAddress = 0 in {
def SHR8mCL : I<0xD2, MRM5m, (ops i8mem :$dst),
"shr{b} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>;
"shr{b} {%cl, $dst|$dst, %CL}",
[(store (srl (loadi8 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>;
def SHR16mCL : I<0xD3, MRM5m, (ops i16mem:$dst),
"shr{w} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>, OpSize;
"shr{w} {%cl, $dst|$dst, %CL}",
[(store (srl (loadi16 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>, OpSize;
def SHR32mCL : I<0xD3, MRM5m, (ops i32mem:$dst),
"shr{l} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>;
"shr{l} {%cl, $dst|$dst, %CL}",
[(store (srl (loadi32 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>;
def SHR8mi : Ii8<0xC0, MRM5m, (ops i8mem :$dst, i8imm:$src),
"shr{b} {$src, $dst|$dst, $src}", []>;
"shr{b} {$src, $dst|$dst, $src}",
[(store (srl (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SHR16mi : Ii8<0xC1, MRM5m, (ops i16mem:$dst, i8imm:$src),
"shr{w} {$src, $dst|$dst, $src}", []>, OpSize;
"shr{w} {$src, $dst|$dst, $src}",
[(store (srl (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
OpSize;
def SHR32mi : Ii8<0xC1, MRM5m, (ops i32mem:$dst, i8imm:$src),
"shr{l} {$src, $dst|$dst, $src}", []>;
"shr{l} {$src, $dst|$dst, $src}",
[(store (srl (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
}
def SAR8rCL : I<0xD2, MRM7r, (ops R8 :$dst, R8 :$src),
@ -1097,17 +1107,27 @@ def SAR32ri : Ii8<0xC1, MRM7r, (ops R32:$dst, R32:$src1, i8imm:$src2),
[(set R32:$dst, (sra R32:$src1, (i8 imm:$src2)))]>;
let isTwoAddress = 0 in {
def SAR8mCL : I<0xD2, MRM7m, (ops i8mem :$dst),
"sar{b} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>;
"sar{b} {%cl, $dst|$dst, %CL}",
[(store (sra (loadi8 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>;
def SAR16mCL : I<0xD3, MRM7m, (ops i16mem:$dst),
"sar{w} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>, OpSize;
"sar{w} {%cl, $dst|$dst, %CL}",
[(store (sra (loadi16 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>, OpSize;
def SAR32mCL : I<0xD3, MRM7m, (ops i32mem:$dst),
"sar{l} {%cl, $dst|$dst, %CL}", []>, Imp<[CL],[]>;
"sar{l} {%cl, $dst|$dst, %CL}",
[(store (sra (loadi32 addr:$dst), CL), addr:$dst)]>,
Imp<[CL],[]>;
def SAR8mi : Ii8<0xC0, MRM7m, (ops i8mem :$dst, i8imm:$src),
"sar{b} {$src, $dst|$dst, $src}", []>;
"sar{b} {$src, $dst|$dst, $src}",
[(store (sra (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SAR16mi : Ii8<0xC1, MRM7m, (ops i16mem:$dst, i8imm:$src),
"sar{w} {$src, $dst|$dst, $src}", []>, OpSize;
"sar{w} {$src, $dst|$dst, $src}",
[(store (sra (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
OpSize;
def SAR32mi : Ii8<0xC1, MRM7m, (ops i32mem:$dst, i8imm:$src),
"sar{l} {$src, $dst|$dst, $src}", []>;
"sar{l} {$src, $dst|$dst, $src}",
[(store (sra (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
}
// Rotate instructions