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Add aliases to map 'imm, mem' form of x86 bts/btr/btc without a size suffix to their 32-bit forms. 

This makes them consistent with 'bt' which already had this handling. gas has the same behavior. There have been discussions on the mailing list about determining size based on the immediate, but my goal here was just to remove the inconsistency.

llvm-svn: 186904
This commit is contained in:
Craig Topper 2013-07-23 00:56:15 +00:00
parent 088d39afc6
commit c15a9e4fa4
1 changed files with 7 additions and 0 deletions
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7
llvm/lib/Target/X86/X86InstrInfo.td
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@ -1981,8 +1981,15 @@ def : InstAlias<"aad", (AAD8i8 10)>;
def : InstAlias<"aam", (AAM8i8 10)>;
// Disambiguate the mem/imm form of bt-without-a-suffix as btl.
// Likewise for btc/btr/bts.
def : InstAlias<"bt {$imm, $mem|$mem, $imm}",
(BT32mi8 i32mem:$mem, i32i8imm:$imm), 0>;
def : InstAlias<"btc {$imm, $mem|$mem, $imm}",
(BTC32mi8 i32mem:$mem, i32i8imm:$imm), 0>;
def : InstAlias<"btr {$imm, $mem|$mem, $imm}",
(BTR32mi8 i32mem:$mem, i32i8imm:$imm), 0>;
def : InstAlias<"bts {$imm, $mem|$mem, $imm}",
(BTS32mi8 i32mem:$mem, i32i8imm:$imm), 0>;
// clr aliases.
def : InstAlias<"clrb $reg", (XOR8rr GR8 :$reg, GR8 :$reg), 0>;