Changes in directory llvm/lib/Target/X86:
X86InstrInfo.td updated: 1.158 -> 1.159
---
Log message:
Add neg and not patterns which fold load + stores.
---
Diffs of the changes: (+12 -6)
X86InstrInfo.td | 18 ++++++++++++------
1 files changed, 12 insertions(+), 6 deletions(-)
Index: llvm/lib/Target/X86/X86InstrInfo.td
diff -u llvm/lib/Target/X86/X86InstrInfo.td:1.158
llvm/lib/Target/X86/X86InstrInfo.td:1.159
--- llvm/lib/Target/X86/X86InstrInfo.td:1.158 Mon Dec 12 18:25:07 2005
+++ llvm/lib/Target/X86/X86InstrInfo.td Mon Dec 12 18:54:44 2005
@@ -682,9 +682,12 @@
def NEG32r : I<0xF7, MRM3r, (ops R32:$dst, R32:$src), "neg{l} $dst",
[(set R32:$dst, (ineg R32:$src))]>;
let isTwoAddress = 0 in {
- def NEG8m : I<0xF6, MRM3m, (ops i8mem :$dst), "neg{b} $dst", []>;
- def NEG16m : I<0xF7, MRM3m, (ops i16mem:$dst), "neg{w} $dst", []>, OpSize;
- def NEG32m : I<0xF7, MRM3m, (ops i32mem:$dst), "neg{l} $dst", []>;
+ def NEG8m : I<0xF6, MRM3m, (ops i8mem :$dst), "neg{b} $dst",
+ [(store (ineg (i8 (load addr:$dst))), addr:$dst)]>;
+ def NEG16m : I<0xF7, MRM3m, (ops i16mem:$dst), "neg{w} $dst",
+ [(store (ineg (i16 (load addr:$dst))), addr:$dst)]>, OpSize;
+ def NEG32m : I<0xF7, MRM3m, (ops i32mem:$dst), "neg{l} $dst",
+ [(store (ineg (i32 (load addr:$dst))), addr:$dst)]>;
}
def NOT8r : I<0xF6, MRM2r, (ops R8 :$dst, R8 :$src), "not{b} $dst",
@@ -694,9 +697,12 @@
def NOT32r : I<0xF7, MRM2r, (ops R32:$dst, R32:$src), "not{l} $dst",
[(set R32:$dst, (not R32:$src))]>;
let isTwoAddress = 0 in {
- def NOT8m : I<0xF6, MRM2m, (ops i8mem :$dst), "not{b} $dst", []>;
- def NOT16m : I<0xF7, MRM2m, (ops i16mem:$dst), "not{w} $dst", []>, OpSize;
- def NOT32m : I<0xF7, MRM2m, (ops i32mem:$dst), "not{l} $dst", []>;
+ def NOT8m : I<0xF6, MRM2m, (ops i8mem :$dst), "not{b} $dst",
+ [(store (not (i8 (load addr:$dst))), addr:$dst)]>;
+ def NOT16m : I<0xF7, MRM2m, (ops i16mem:$dst), "not{w} $dst",
+ [(store (not (i16 (load addr:$dst))), addr:$dst)]>, OpSize;
+ def NOT32m : I<0xF7, MRM2m, (ops i32mem:$dst), "not{l} $dst",
+ [(store (not (i32 (load addr:$dst))), addr:$dst)]>;
}
// TODO: inc/dec is slow for P4, but fast for Pentium-M.
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