ARM Assembler support for DSB instruction.

Add instalias for default 'sy' option. Add tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135116 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index a90e8ca52b5084a7fb292f826591f4926009d518..5d646e7349976f23620fc5acbe9713a4d5dcbe22 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -3314,6 +3314,8 @@ def DSB : AInoP<(outs), (ins memb_opt:$opt), MiscFrm, NoItinerary,
   let Inst{3-0} = opt;
 }
 
+def : InstAlias<"dsb", (DSB 0xf)>, Requires<[IsARM, HasDB]>;
+
 // ISB has only full system option
 def ISB : AInoP<(outs), (ins), MiscFrm, NoItinerary, "isb", "", []>,
                 Requires<[IsARM, HasDB]> {

diff --git a/test/MC/ARM/basic-arm-instructions.s b/test/MC/ARM/basic-arm-instructions.s
index 1a78ba617882d9702e81cf6672dc07d9ef3caafe..ad7f5628bb98889d0e735603f4194e00885e6b24 100644 (file)
--- a/test/MC/ARM/basic-arm-instructions.s
+++ b/test/MC/ARM/basic-arm-instructions.s
@@ -490,3 +490,34 @@ _func:
 @ CHECK: dmb   osh                     @ encoding: [0x53,0xf0,0x7f,0xf5]
 @ CHECK: dmb   oshst                   @ encoding: [0x52,0xf0,0x7f,0xf5]
 @ CHECK: dmb   sy                      @ encoding: [0x5f,0xf0,0x7f,0xf5]
+
+@------------------------------------------------------------------------------
+@ DSB
+@------------------------------------------------------------------------------
+  dsb sy
+  dsb st
+  dsb sh
+  dsb ish
+  dsb shst
+  dsb ishst
+  dsb un
+  dsb nsh
+  dsb unst
+  dsb nshst
+  dsb osh
+  dsb oshst
+  dsb
+
+@ CHECK: dsb   sy                      @ encoding: [0x4f,0xf0,0x7f,0xf5]
+@ CHECK: dsb   st                      @ encoding: [0x4e,0xf0,0x7f,0xf5]
+@ CHECK: dsb   ish                     @ encoding: [0x4b,0xf0,0x7f,0xf5]
+@ CHECK: dsb   ish                     @ encoding: [0x4b,0xf0,0x7f,0xf5]
+@ CHECK: dsb   ishst                   @ encoding: [0x4a,0xf0,0x7f,0xf5]
+@ CHECK: dsb   ishst                   @ encoding: [0x4a,0xf0,0x7f,0xf5]
+@ CHECK: dsb   nsh                     @ encoding: [0x47,0xf0,0x7f,0xf5]
+@ CHECK: dsb   nsh                     @ encoding: [0x47,0xf0,0x7f,0xf5]
+@ CHECK: dsb   nshst                   @ encoding: [0x46,0xf0,0x7f,0xf5]
+@ CHECK: dsb   nshst                   @ encoding: [0x46,0xf0,0x7f,0xf5]
+@ CHECK: dsb   osh                     @ encoding: [0x43,0xf0,0x7f,0xf5]
+@ CHECK: dsb   oshst                   @ encoding: [0x42,0xf0,0x7f,0xf5]
+@ CHECK: dsb   sy                      @ encoding: [0x4f,0xf0,0x7f,0xf5]