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Add support for assembling "movq" when it's correct to do so, while continuing

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to emit "movd" across the board to continue supporting a Darwin assembler bug.
This is the reincarnation of r133452.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133565 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2011-06-21 22:45:41 +00:00
parent 0c11218f0a
commit 94d4c91bc5
2 changed files with 24 additions and 0 deletions
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16
lib/Target/X86/X86InstrSSE.td
View File

@ -2968,6 +2968,22 @@ def : Pat<(v4i32 (X86vzmovl (bc_v4i32 (loadv2i64 addr:$src)))),
(MOVZDI2PDIrm addr:$src)>;
}
// 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.
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(MOV64toPQIrr VR128:$dst, GR64:$src), 0>;
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(MOV64toSDrr FR64:$dst, GR64:$src), 0>;
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(MOVPQIto64rr GR64:$dst, VR128:$src), 0>;
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(MOVSDto64rr GR64:$dst, FR64:$src), 0>;
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(VMOVZQI2PQIrr VR128:$dst, GR64:$src), 0>;
def : InstAlias<"movq\t{$src, $dst|$dst, $src}",
(MOVZQI2PQIrr VR128:$dst, GR64:$src), 0>;
//===---------------------------------------------------------------------===//
// SSE2 - Move Quadword
//===---------------------------------------------------------------------===//

8
test/MC/X86/x86-64.s
View File

@ -1128,3 +1128,11 @@ xsetbv // CHECK: xsetbv # encoding: [0x0f,0x01,0xd1]
// CHECK: strq
// CHECK: encoding: [0x48,0x0f,0x00,0xc8]
str %rax
// CHECK: movd %rdi, %xmm0
// CHECK: encoding: [0x66,0x48,0x0f,0x6e,0xc7]
movq %rdi,%xmm0
// CHECK: movd %rdi, %xmm0
// CHECK: encoding: [0x66,0x48,0x0f,0x6e,0xc7]
movd %rdi,%xmm0