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Add AVX versions of MOVZDI2PDI patterns. Use SUBREG_TO_REG to indicate 

that the AVX versions (even the 128-bit ones) all clear the upper part
of the destination register.

llvm-svn: 139066
This commit is contained in:
Bruno Cardoso Lopes 2011-09-03 00:46:51 +00:00
parent 903952223a
commit 9a0da1e57a
1 changed files with 45 additions and 17 deletions
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30
llvm/lib/Target/X86/X86InstrSSE.td
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@ -4138,7 +4138,9 @@ def MOVZDI2PDIrm : PDI<0x6E, MRMSrcMem, (outs VR128:$dst), (ins i32mem:$src),
[(set VR128:$dst,
(v4i32 (X86vzmovl (v4i32 (scalar_to_vector
(loadi32 addr:$src))))))]>;
}
let Predicates = [HasSSE2], AddedComplexity = 20 in {
def : Pat<(v4i32 (X86vzmovl (loadv4i32 addr:$src))),
(MOVZDI2PDIrm addr:$src)>;
def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv4f32 addr:$src)))),
@ -4147,7 +4149,16 @@ def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv2i64 addr:$src)))),
(MOVZDI2PDIrm addr:$src)>;
}
let Predicates = [HasAVX] in {
// AVX 128-bit movd/movq instruction write zeros in the high 128-bit part.
let AddedComplexity = 20 in {
def : Pat<(v4i32 (X86vzmovl (loadv4i32 addr:$src))),
(SUBREG_TO_REG (i32 0), (VMOVZDI2PDIrm addr:$src), sub_xmm)>;
def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv4f32 addr:$src)))),
(SUBREG_TO_REG (i32 0), (VMOVZDI2PDIrm addr:$src), sub_xmm)>;
def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv2i64 addr:$src)))),
(SUBREG_TO_REG (i32 0), (VMOVZDI2PDIrm addr:$src), sub_xmm)>;
}
// Use regular 128-bit instructions to match 256-bit scalar_to_vec+zext.
def : Pat<(v8i32 (X86vzmovl (insert_subvector undef,
(v4i32 (scalar_to_vector GR32:$src)),(i32 0)))),
@ -4155,6 +4166,7 @@ def : Pat<(v8i32 (X86vzmovl (insert_subvector undef,
def : Pat<(v4i64 (X86vzmovl (insert_subvector undef,
(v2i64 (scalar_to_vector GR64:$src)),(i32 0)))),
(SUBREG_TO_REG (i64 0), (VMOVZQI2PQIrr GR64:$src), sub_xmm)>;
}
// These are the correct encodings of the instructions so that we know how to
// read correct assembly, even though we continue to emit the wrong ones for
@ -4220,7 +4232,7 @@ def VMOVZQI2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i64mem:$src),
(loadi64 addr:$src))))))]>,
XS, VEX, Requires<[HasAVX]>;
let AddedComplexity = 20 in {
let AddedComplexity = 20 in
def MOVZQI2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i64mem:$src),
"movq\t{$src, $dst|$dst, $src}",
[(set VR128:$dst,
@ -4228,6 +4240,7 @@ def MOVZQI2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i64mem:$src),
(loadi64 addr:$src))))))]>,
XS, Requires<[HasSSE2]>;
let Predicates = [HasSSE2], AddedComplexity = 20 in {
def : Pat<(v2i64 (X86vzmovl (loadv2i64 addr:$src))),
(MOVZQI2PQIrm addr:$src)>;
def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4f32 addr:$src)))),
@ -4235,6 +4248,15 @@ def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4f32 addr:$src)))),
def : Pat<(v2i64 (X86vzload addr:$src)), (MOVZQI2PQIrm addr:$src)>;
}
let Predicates = [HasAVX], AddedComplexity = 20 in {
def : Pat<(v2i64 (X86vzmovl (loadv2i64 addr:$src))),
(SUBREG_TO_REG (i64 0), (VMOVZQI2PQIrm addr:$src), sub_xmm)>;
def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4f32 addr:$src)))),
(SUBREG_TO_REG (i64 0), (VMOVZQI2PQIrm addr:$src), sub_xmm)>;
def : Pat<(v2i64 (X86vzload addr:$src)),
(SUBREG_TO_REG (i64 0), (VMOVZQI2PQIrm addr:$src), sub_xmm)>;
}
//===---------------------------------------------------------------------===//
// Moving from XMM to XMM and clear upper 64 bits. Note, there is a bug in
// IA32 document. movq xmm1, xmm2 does clear the high bits.
@ -4262,9 +4284,15 @@ def MOVZPQILo2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i128mem:$src),
[(set VR128:$dst, (v2i64 (X86vzmovl
(loadv2i64 addr:$src))))]>,
XS, Requires<[HasSSE2]>;
}
let AddedComplexity = 20 in {
let Predicates = [HasSSE2] in
def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4i32 addr:$src)))),
(MOVZPQILo2PQIrm addr:$src)>;
let Predicates = [HasAVX] in
def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4i32 addr:$src)))),
(SUBREG_TO_REG (i64 0), (VMOVZPQILo2PQIrm addr:$src), sub_xmm)>;
}
// Instructions to match in the assembler