[llvm-commits] [llvm] r139200 - in /llvm/trunk: lib/Target/ARM/ARMInstrThumb2.td test/MC/ARM/basic-thumb2-instructions.s
Jim Grosbach
grosbach at apple.com
Tue Sep 6 15:53:27 PDT 2011
Author: grosbach
Date: Tue Sep 6 17:53:27 2011
New Revision: 139200
URL: http://llvm.org/viewvc/llvm-project?rev=139200&view=rev
Log:
Thumb2 parsing and encoding for ISB.
Modified:
llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s
Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td?rev=139200&r1=139199&r2=139200&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td Tue Sep 6 17:53:27 2011
@@ -2794,20 +2794,19 @@
}
def t2DSB : AInoP<(outs), (ins memb_opt:$opt), ThumbFrm, NoItinerary,
- "dsb", "\t$opt",
- [/* For disassembly only; pattern left blank */]>,
+ "dsb", "\t$opt", []>,
Requires<[IsThumb, HasDB]> {
bits<4> opt;
let Inst{31-4} = 0xf3bf8f4;
let Inst{3-0} = opt;
}
-// ISB has only full system option -- for disassembly only
-def t2ISB : AInoP<(outs), (ins), ThumbFrm, NoItinerary, "isb", "",
- [/* For disassembly only; pattern left blank */]>,
- Requires<[IsThumb2, HasV7]> {
+def t2ISB : AInoP<(outs), (ins memb_opt:$opt), ThumbFrm, NoItinerary,
+ "isb", "\t$opt",
+ []>, Requires<[IsThumb2, HasV7]> {
+ bits<4> opt;
let Inst{31-4} = 0xf3bf8f6;
- let Inst{3-0} = 0b1111;
+ let Inst{3-0} = opt;
}
class T2I_ldrex<bits<2> opcod, dag oops, dag iops, AddrMode am, int sz,
@@ -3591,4 +3590,4 @@
// Memory barriers
def : InstAlias<"dmb", (t2DMB 0xf)>, Requires<[IsThumb2, HasDB]>;
def : InstAlias<"dsb", (t2DSB 0xf)>, Requires<[IsThumb2, HasDB]>;
-//def : InstAlias<"isb", (t2ISB 0xf)>, Requires<[IsThumb2, HasDB]>;
+def : InstAlias<"isb", (t2ISB 0xf)>, Requires<[IsThumb2, HasDB]>;
Modified: llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s?rev=139200&r1=139199&r2=139200&view=diff
==============================================================================
--- llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s (original)
+++ llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s Tue Sep 6 17:53:27 2011
@@ -453,6 +453,16 @@
@------------------------------------------------------------------------------
+@ ISB
+ at ------------------------------------------------------------------------------
+ isb sy
+ isb
+
+@ CHECK: isb sy @ encoding: [0xbf,0xf3,0x6f,0x8f]
+@ CHECK: isb sy @ encoding: [0xbf,0xf3,0x6f,0x8f]
+
+
+ at ------------------------------------------------------------------------------
@ IT
@------------------------------------------------------------------------------
@ Test encodings of a few full IT blocks, not just the IT instruction
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