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MC/X86: Add movq alias for movabsq, to allow matching 64-bit immediates with movq.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104275 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -354,6 +354,13 @@ def MOV64ri32 : RIi32<0xC7, MRM0r, (outs GR64:$dst), (ins i64i32imm:$src),
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[(set GR64:$dst, i64immSExt32:$src)]>;
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}
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// The assembler accepts movq of a 64-bit immediate as an alternate spelling of
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// movabsq.
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let isAsmParserOnly = 1 in {
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def MOV64ri_alt : RIi64<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64imm:$src),
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"mov{q}\t{$src, $dst|$dst, $src}", []>;
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}
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def MOV64rr_REV : RI<0x8B, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
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"mov{q}\t{$src, $dst|$dst, $src}", []>;
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@ -84,3 +84,23 @@ movl 0, %eax // CHECK: movl 0, %eax # encoding: [0x8b,0x04,0x25,A,A,A,A]
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popf
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// CHECK: popfq # encoding: [0x9d]
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popfq
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// CHECK: movabsq $-281474976710654, %rax
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// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
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movabsq $0xFFFF000000000002, %rax
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// CHECK: movq $-281474976710654, %rax
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// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
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movq $0xFFFF000000000002, %rax
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// CHECK: movq $-65536, %rax
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// CHECK: encoding: [0x48,0xc7,0xc0,0x00,0x00,0xff,0xff]
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movq $0xFFFFFFFFFFFF0000, %rax
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// CHECK: movq $-256, %rax
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// CHECK: encoding: [0x48,0xc7,0xc0,0x00,0xff,0xff,0xff]
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movq $0xFFFFFFFFFFFFFF00, %rax
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// CHECK: movq $10, %rax
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// CHECK: encoding: [0x48,0xc7,0xc0,0x0a,0x00,0x00,0x00]
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movq $10, %rax
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