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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.

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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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186904 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2013-07-23 00:56:15 +00:00
parent 0e29eeec27
commit 1fd6e647bc
1 changed files with 7 additions and 0 deletions
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7
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>;