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Add more vector move low and zero-extend patterns.

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llvm-svn: 58752
This commit is contained in:
Evan Cheng 2008-11-05 06:04:51 +00:00
parent 1bde698192
commit 1378d6c7a9
2 changed files with 24 additions and 0 deletions
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9
lib/Target/X86/X86InstrMMX.td
View File

@ -585,6 +585,15 @@ let AddedComplexity = 15 in {
(MMX_MOVZDI2PDIrr GR32:$src)>;
}
let AddedComplexity = 20 in {
def : Pat<(v8i8 (X86vzmovl (bc_v8i8 (load_mmx addr:$src)))),
(MMX_MOVZDI2PDIrm addr:$src)>;
def : Pat<(v4i16 (X86vzmovl (bc_v4i16 (load_mmx addr:$src)))),
(MMX_MOVZDI2PDIrm addr:$src)>;
def : Pat<(v2i32 (X86vzmovl (bc_v2i32 (load_mmx addr:$src)))),
(MMX_MOVZDI2PDIrm addr:$src)>;
}
// Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower
// 8 or 16-bits matter.
def : Pat<(bc_v8i8 (v2i32 (scalar_to_vector GR32:$src))),

15
test/CodeGen/X86/mmx-vzmovl.ll Normal file
View File

@ -0,0 +1,15 @@
; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep movd
; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep movq
define void @foo(<1 x i64>* %a, <1 x i64>* %b) nounwind {
entry:
%0 = load <1 x i64>* %a, align 8 ; <<1 x i64>> [#uses=1]
%1 = bitcast <1 x i64> %0 to <2 x i32> ; <<2 x i32>> [#uses=1]
%2 = and <2 x i32> %1, < i32 -1, i32 0 > ; <<2 x i32>> [#uses=1]
%3 = bitcast <2 x i32> %2 to <1 x i64> ; <<1 x i64>> [#uses=1]
store <1 x i64> %3, <1 x i64>* %b, align 8
br label %bb2
bb2: ; preds = %entry
ret void
}