Thumb2 assembly parsing and encoding for SASX.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139843 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 245536f94507fefdbb8c502937d914629246e337..72793e0e333e3273fefea5a057ad79cf33b0cd75 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -4944,6 +4944,8 @@ def : MnemonicAlias<"srs", "srsia">;
 
 // QSAX == QSUBADDX
 def : MnemonicAlias<"qsubaddx", "qsax">;
+// SASX == SADDSUBX
+def : MnemonicAlias<"saddsubx", "sasx">;
 
 // LDRSBT/LDRHT/LDRSHT post-index offset if optional.
 // Note that the write-back output register is a dummy operand for MC (it's

diff --git a/test/MC/ARM/basic-thumb2-instructions.s b/test/MC/ARM/basic-thumb2-instructions.s
index 0d5d2d319277506c854f377d814e2fd608b17a84..3011ab768d50232f3cc3a54cbd9db8abc55ad75c 100644 (file)
--- a/test/MC/ARM/basic-thumb2-instructions.s
+++ b/test/MC/ARM/basic-thumb2-instructions.s
@@ -1578,6 +1578,24 @@ _func:
 @ CHECK: sadd8ne r3, r4, r8             @ encoding: [0x84,0xfa,0x08,0xf3]
 
 
+@------------------------------------------------------------------------------
+@ SASX
+@------------------------------------------------------------------------------
+        saddsubx r9, r2, r7
+        it ne
+        saddsubxne r2, r5, r6
+        sasx r9, r2, r7
+        it ne
+        sasxne r2, r5, r6
+
+@ CHECK: sasx  r9, r2, r7              @ encoding: [0xa2,0xfa,0x07,0xf9]
+@ CHECK: it    ne                      @ encoding: [0x18,0xbf]
+@ CHECK: sasxne        r2, r5, r6              @ encoding: [0xa5,0xfa,0x06,0xf2]
+@ CHECK: sasx  r9, r2, r7              @ encoding: [0xa2,0xfa,0x07,0xf9]
+@ CHECK: it    ne                      @ encoding: [0x18,0xbf]
+@ CHECK: sasxne        r2, r5, r6              @ encoding: [0xa5,0xfa,0x06,0xf2]
+
+
 @------------------------------------------------------------------------------
 @ SUB (register)
 @------------------------------------------------------------------------------