Added an alternate form of register-register CMP

to the Intel instruction tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82081 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td
index 6f7b6fd40376148645ab3641d529b041c62fe64a..515120b030757c786d89ab736bdc25d5655f5b91 100644 (file)
--- a/lib/Target/X86/X86Instr64bit.td
+++ b/lib/Target/X86/X86Instr64bit.td
@@ -1081,6 +1081,8 @@ def CMP64rr : RI<0x39, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
                  "cmp{q}\t{$src2, $src1|$src1, $src2}",
                  [(X86cmp GR64:$src1, GR64:$src2),
                   (implicit EFLAGS)]>;
+def CMP64mrmrr : RI<0x3B, MRMSrcReg, (outs), (ins GR64:$src1, GR64:$src2),
+                    "cmp{q}\t{$src2, $src1|$src1, $src2}", []>;
 def CMP64mr : RI<0x39, MRMDestMem, (outs), (ins i64mem:$src1, GR64:$src2),
                  "cmp{q}\t{$src2, $src1|$src1, $src2}",
                  [(X86cmp (loadi64 addr:$src1), GR64:$src2),

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 5d7b56934da8db459d43806cb9c37059e9d20e1c..88dbf67ee6de72d070bd2b485687d5a2eeb885c1 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -3189,6 +3189,12 @@ def CMP32rm : I<0x3B, MRMSrcMem,
                 "cmp{l}\t{$src2, $src1|$src1, $src2}",
                 [(X86cmp GR32:$src1, (loadi32 addr:$src2)),
                  (implicit EFLAGS)]>;
+def CMP8mrmrr : I<0x3A, MRMSrcReg, (outs), (ins GR8:$src1, GR8:$src2),
+                  "cmp{b}\t{$src2, $src1|$src1, $src2}", []>;
+def CMP16mrmrr : I<0x3B, MRMSrcReg, (outs), (ins GR16:$src1, GR16:$src2),
+                   "cmp{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize;
+def CMP32mrmrr : I<0x3B, MRMSrcReg, (outs), (ins GR32:$src1, GR32:$src2),
+                   "cmp{l}\t{$src2, $src1|$src1, $src2}", []>;
 def CMP8ri  : Ii8<0x80, MRM7r,
                   (outs), (ins GR8:$src1, i8imm:$src2),
                   "cmp{b}\t{$src2, $src1|$src1, $src2}",