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authorSean Callanan <scallanan@apple.com>2009-09-15 21:43:27 +0000
committerSean Callanan <scallanan@apple.com>2009-09-15 21:43:27 +0000
commit62c28e3f910e25e12957febbe3caac6566df0585 (patch)
tree9c05cfd95a1b2084353fddd8139567ad72ddbfbc
parent9b379dc52698a15ba474f570b5badf85b1903bfd (diff)
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Updated comments per Eli's suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81923 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Target/X86/X86Instr64bit.td3
-rw-r--r--lib/Target/X86/X86InstrInfo.td3
2 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td
index 152cf2da15..dc98a2e309 100644
--- a/lib/Target/X86/X86Instr64bit.td
+++ b/lib/Target/X86/X86Instr64bit.td
@@ -458,7 +458,8 @@ def ADD64rm : RI<0x03, MRMSrcMem, (outs GR64:$dst), (ins GR64:$src1, i64mem:
[(set GR64:$dst, (add GR64:$src1, (load addr:$src2))),
(implicit EFLAGS)]>;
-// Register-Register Addition
+// Register-Register Addition - Equivalent to the normal rr form (ADD64rr), but
+// differently encoded.
def ADD64mrmrr : RI<0x03, MRMSrcReg, (outs GR64:$dst), (ins GR64:$src1, GR64:$src2),
"add{l}\t{$src2, $dst|$dst, $src2}", []>;
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 923e2c2a4d..66bfdcdb34 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -2428,7 +2428,8 @@ def ADD32rm : I<0x03, MRMSrcMem, (outs GR32:$dst),
[(set GR32:$dst, (add GR32:$src1, (load addr:$src2))),
(implicit EFLAGS)]>;
-// Register-Register Addition
+// Register-Register Addition - Equivalent to the normal rr forms (ADD8rr,
+// ADD16rr, and ADD32rr), but differently encoded.
def ADD8mrmrr: I<0x02, MRMSrcReg, (outs GR8:$dst), (ins GR8:$src1, GR8:$src2),
"add{b}\t{$src2, $dst|$dst, $src2}", []>;
def ADD16mrmrr: I<0x03, MRMSrcReg,(outs GR16:$dst),(ins GR16:$src1, GR16:$src2),