Thumb2 assembly parsing and encoding for SSAX.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139929 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index c5e4b8653c06e7ace3d6464b80f520351fe08dc3..1a5acfe1cc6876117e9dd8aee66d0d26275df416 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -4950,6 +4950,8 @@ def : MnemonicAlias<"saddsubx", "sasx">;
 def : MnemonicAlias<"shaddsubx", "shasx">;
 // SHSAX == SHSUBADDX
 def : MnemonicAlias<"shsubaddx", "shsax">;
+// SSAX == SSUBADDX
+def : MnemonicAlias<"ssubaddx", "ssax">;
 
 // 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 d960f1ef296867b2091379decb7e122be9f6c85e..d44d65da46bf884195925d9842283930b2744bc0 100644 (file)
--- a/test/MC/ARM/basic-thumb2-instructions.s
+++ b/test/MC/ARM/basic-thumb2-instructions.s
@@ -2074,6 +2074,24 @@ _func:
 @ CHECK: ssat16        r3, #16, r5             @ encoding: [0x25,0xf3,0x0f,0x03]
 
 
+@------------------------------------------------------------------------------
+@ SSAX
+@------------------------------------------------------------------------------
+        ssubaddx r2, r3, r4
+        it lt
+        ssubaddxlt r2, r3, r4
+        ssax r2, r3, r4
+        it lt
+        ssaxlt r2, r3, r4
+
+@ CHECK: ssax  r2, r3, r4              @ encoding: [0xe3,0xfa,0x04,0xf2]
+@ CHECK: it    lt                      @ encoding: [0xb8,0xbf]
+@ CHECK: ssaxlt        r2, r3, r4              @ encoding: [0xe3,0xfa,0x04,0xf2]
+@ CHECK: ssax  r2, r3, r4              @ encoding: [0xe3,0xfa,0x04,0xf2]
+@ CHECK: it    lt                      @ encoding: [0xb8,0xbf]
+@ CHECK: ssaxlt        r2, r3, r4              @ encoding: [0xe3,0xfa,0x04,0xf2]
+
+
 @------------------------------------------------------------------------------
 @ SUB (register)
 @------------------------------------------------------------------------------