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movd/movq write zeros in the high 128-bit part of the vector. Use

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them to match 256-bit scalar_to_vector+zext.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136322 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes 2011-07-28 01:26:46 +00:00
parent a23236c360
commit 735bccda65
1 changed files with 28 additions and 2 deletions
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30
lib/Target/X86/X86InstrSSE.td
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@ -2865,7 +2865,9 @@ def MASKMOVDQU64 : PDI<0xF7, MRMSrcReg, (outs), (ins VR128:$src, VR128:$mask),
// SSE2 - Move Doubleword
//===---------------------------------------------------------------------===//
//===---------------------------------------------------------------------===//
// Move Int Doubleword to Packed Double Int
//
def VMOVDI2PDIrr : VPDI<0x6E, MRMSrcReg, (outs VR128:$dst), (ins GR32:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set VR128:$dst,
@ -2899,8 +2901,9 @@ def MOV64toSDrr : RPDI<0x6E, MRMSrcReg, (outs FR64:$dst), (ins GR64:$src),
"mov{d|q}\t{$src, $dst|$dst, $src}",
[(set FR64:$dst, (bitconvert GR64:$src))]>;
//===---------------------------------------------------------------------===//
// Move Int Doubleword to Single Scalar
//
def VMOVDI2SSrr : VPDI<0x6E, MRMSrcReg, (outs FR32:$dst), (ins GR32:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set FR32:$dst, (bitconvert GR32:$src))]>, VEX;
@ -2917,7 +2920,9 @@ def MOVDI2SSrm : PDI<0x6E, MRMSrcMem, (outs FR32:$dst), (ins i32mem:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set FR32:$dst, (bitconvert (loadi32 addr:$src)))]>;
//===---------------------------------------------------------------------===//
// Move Packed Doubleword Int to Packed Double Int
//
def VMOVPDI2DIrr : VPDI<0x7E, MRMDestReg, (outs GR32:$dst), (ins VR128:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set GR32:$dst, (vector_extract (v4i32 VR128:$src),
@ -2951,7 +2956,9 @@ def MOVSDto64mr : RPDI<0x7E, MRMDestMem, (outs), (ins i64mem:$dst, FR64:$src),
"movq\t{$src, $dst|$dst, $src}",
[(store (i64 (bitconvert FR64:$src)), addr:$dst)]>;
//===---------------------------------------------------------------------===//
// Move Scalar Single to Double Int
//
def VMOVSS2DIrr : VPDI<0x7E, MRMDestReg, (outs GR32:$dst), (ins FR32:$src),
"movd\t{$src, $dst|$dst, $src}",
[(set GR32:$dst, (bitconvert FR32:$src))]>, VEX;
@ -2965,7 +2972,9 @@ def MOVSS2DImr : PDI<0x7E, MRMDestMem, (outs), (ins i32mem:$dst, FR32:$src),
"movd\t{$src, $dst|$dst, $src}",
[(store (i32 (bitconvert FR32:$src)), addr:$dst)]>;
// movd / movq to XMM register zero-extends
//===---------------------------------------------------------------------===//
// Patterns and instructions to describe movd/movq to XMM register zero-extends
//
let AddedComplexity = 15 in {
def VMOVZDI2PDIrr : VPDI<0x6E, MRMSrcReg, (outs VR128:$dst), (ins GR32:$src),
"movd\t{$src, $dst|$dst, $src}",
@ -3010,6 +3019,15 @@ def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv2i64 addr:$src)))),
(MOVZDI2PDIrm addr:$src)>;
}
// AVX 128-bit movd/movq instruction write zeros in the high 128-bit part.
// Use regular 128-bit instructions to match 256-bit scalar_to_vec+zext.
def : Pat<(v8i32 (X86vzmovl (insert_subvector undef,
(v4i32 (scalar_to_vector GR32:$src)), (i32 0)))),
(SUBREG_TO_REG (i32 0), (VMOVZDI2PDIrr GR32:$src), sub_xmm)>;
def : Pat<(v4i64 (X86vzmovl (insert_subvector undef,
(v2i64 (scalar_to_vector GR64:$src)), (i32 0)))),
(SUBREG_TO_REG (i64 0), (VMOVZQI2PQIrr GR64:$src), sub_xmm)>;
// These are the correct encodings of the instructions so that we know how to
// read correct assembly, even though we continue to emit the wrong ones for
// compatibility with Darwin's buggy assembler.
@ -3030,7 +3048,9 @@ def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
// SSE2 - Move Quadword
//===---------------------------------------------------------------------===//
//===---------------------------------------------------------------------===//
// Move Quadword Int to Packed Quadword Int
//
def VMOVQI2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i64mem:$src),
"vmovq\t{$src, $dst|$dst, $src}",
[(set VR128:$dst,
@ -3042,7 +3062,9 @@ def MOVQI2PQIrm : I<0x7E, MRMSrcMem, (outs VR128:$dst), (ins i64mem:$src),
(v2i64 (scalar_to_vector (loadi64 addr:$src))))]>, XS,
Requires<[HasSSE2]>; // SSE2 instruction with XS Prefix
//===---------------------------------------------------------------------===//
// Move Packed Quadword Int to Quadword Int
//
def VMOVPQI2QImr : VPDI<0xD6, MRMDestMem, (outs), (ins i64mem:$dst, VR128:$src),
"movq\t{$src, $dst|$dst, $src}",
[(store (i64 (vector_extract (v2i64 VR128:$src),
@ -3055,7 +3077,9 @@ def MOVPQI2QImr : PDI<0xD6, MRMDestMem, (outs), (ins i64mem:$dst, VR128:$src),
def : Pat<(f64 (vector_extract (v2f64 VR128:$src), (iPTR 0))),
(f64 (EXTRACT_SUBREG (v2f64 VR128:$src), sub_sd))>;
//===---------------------------------------------------------------------===//
// Store / copy lower 64-bits of a XMM register.
//
def VMOVLQ128mr : VPDI<0xD6, MRMDestMem, (outs), (ins i64mem:$dst, VR128:$src),
"movq\t{$src, $dst|$dst, $src}",
[(int_x86_sse2_storel_dq addr:$dst, VR128:$src)]>, VEX;
@ -3086,8 +3110,10 @@ def : Pat<(v2i64 (X86vzmovl (bc_v2i64 (loadv4f32 addr:$src)))),
def : Pat<(v2i64 (X86vzload addr:$src)), (MOVZQI2PQIrm addr:$src)>;
}
//===---------------------------------------------------------------------===//
// 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.
//
let AddedComplexity = 15 in
def VMOVZPQILo2PQIrr : I<0x7E, MRMSrcReg, (outs VR128:$dst), (ins VR128:$src),
"vmovq\t{$src, $dst|$dst, $src}",