[llvm-commits] [llvm] r104275 - in /llvm/trunk: lib/Target/X86/X86Instr64bit.td test/MC/AsmParser/X86/x86_64-new-encoder.s

[Daniel Dunbar]

Author: ddunbar
Date: Thu May 20 15:36:29 2010
New Revision: 104275

URL: http://llvm.org/viewvc/llvm-project?rev=104275&view=rev
Log:
MC/X86: Add movq alias for movabsq, to allow matching 64-bit immediates with movq.

Modified:
    llvm/trunk/lib/Target/X86/X86Instr64bit.td
    llvm/trunk/test/MC/AsmParser/X86/x86_64-new-encoder.s

Modified: llvm/trunk/lib/Target/X86/X86Instr64bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Instr64bit.td?rev=104275&r1=104274&r2=104275&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86Instr64bit.td (original)
+++ llvm/trunk/lib/Target/X86/X86Instr64bit.td Thu May 20 15:36:29 2010
@@ -354,6 +354,13 @@
                       [(set GR64:$dst, i64immSExt32:$src)]>;
 }
 
+// The assembler accepts movq of a 64-bit immediate as an alternate spelling of
+// movabsq.
+let isAsmParserOnly = 1 in {
+def MOV64ri_alt : RIi64<0xB8, AddRegFrm, (outs GR64:$dst), (ins i64imm:$src),
+                    "mov{q}\t{$src, $dst|$dst, $src}", []>;
+}
+
 def MOV64rr_REV : RI<0x8B, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src),
                      "mov{q}\t{$src, $dst|$dst, $src}", []>;
 

Modified: llvm/trunk/test/MC/AsmParser/X86/x86_64-new-encoder.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AsmParser/X86/x86_64-new-encoder.s?rev=104275&r1=104274&r2=104275&view=diff
==============================================================================
--- llvm/trunk/test/MC/AsmParser/X86/x86_64-new-encoder.s (original)
+++ llvm/trunk/test/MC/AsmParser/X86/x86_64-new-encoder.s Thu May 20 15:36:29 2010
@@ -84,3 +84,23 @@
         popf
 // CHECK: popfq	        # encoding: [0x9d]
         popfq
+
+// CHECK: movabsq $-281474976710654, %rax
+// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
+        movabsq $0xFFFF000000000002, %rax
+
+// CHECK: movq $-281474976710654, %rax
+// CHECK: encoding: [0x48,0xb8,0x02,0x00,0x00,0x00,0x00,0x00,0xff,0xff]
+        movq $0xFFFF000000000002, %rax
+
+// CHECK: movq $-65536, %rax
+// CHECK: encoding: [0x48,0xc7,0xc0,0x00,0x00,0xff,0xff]
+        movq $0xFFFFFFFFFFFF0000, %rax
+
+// CHECK: movq $-256, %rax
+// CHECK: encoding: [0x48,0xc7,0xc0,0x00,0xff,0xff,0xff]
+        movq $0xFFFFFFFFFFFFFF00, %rax
+
+// CHECK: movq $10, %rax
+// CHECK: encoding: [0x48,0xc7,0xc0,0x0a,0x00,0x00,0x00]
+        movq $10, %rax