[llvm-commits] [llvm] r126047 - in /llvm/trunk: lib/Target/X86/X86InstrInfo.td test/MC/X86/x86-64.s

[Chris Lattner]

Author: lattner
Date: Sat Feb 19 15:06:36 2011
New Revision: 126047

URL: http://llvm.org/viewvc/llvm-project?rev=126047&view=rev
Log:
implement PR9264: disambiguating 'bt mem, imm' as a btl.
This is reasonable to do since all bt-mem forms do the
same thing.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrInfo.td
    llvm/trunk/test/MC/X86/x86-64.s

Modified: llvm/trunk/lib/Target/X86/X86InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrInfo.td?rev=126047&r1=126046&r2=126047&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrInfo.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrInfo.td Sat Feb 19 15:06:36 2011
@@ -1403,6 +1403,9 @@
 def : InstAlias<"aad", (AAD8i8 10)>;
 def : InstAlias<"aam", (AAM8i8 10)>;
 
+// Disambiguate the mem/imm form of bt-without-a-suffix as btl.
+def : InstAlias<"bt $imm, $mem", (BT32mi8 i32mem:$mem, i32i8imm:$imm)>;
+
 // clr aliases.
 def : InstAlias<"clrb $reg", (XOR8rr  GR8 :$reg, GR8 :$reg)>;
 def : InstAlias<"clrw $reg", (XOR16rr GR16:$reg, GR16:$reg)>;

Modified: llvm/trunk/test/MC/X86/x86-64.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/X86/x86-64.s?rev=126047&r1=126046&r2=126047&view=diff
==============================================================================
--- llvm/trunk/test/MC/X86/x86-64.s (original)
+++ llvm/trunk/test/MC/X86/x86-64.s Sat Feb 19 15:06:36 2011
@@ -648,6 +648,10 @@
 // CHECK: encoding: [0x75,A]
         jnz 0
 
+// PR9264
+btl	$1, 0 // CHECK: btl $1, 0 # encoding: [0x0f,0xba,0x24,0x25,0x00,0x00,0x00,0x00,0x01]
+bt	$1, 0 // CHECK: btl $1, 0 # encoding: [0x0f,0xba,0x24,0x25,0x00,0x00,0x00,0x00,0x01]
+
 // rdar://8017515
 btq $0x01,%rdx
 // CHECK: btq	$1, %rdx