Thumb2 assembly parsing and encoding for USAX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140119 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index a30f761..8187355 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -4962,6 +4962,8 @@
def : MnemonicAlias<"uqaddsubx", "uqasx">;
// UQSAX == UQSUBADDX
def : MnemonicAlias<"uqsubaddx", "uqsax">;
+// USAX == USUBADDX
+def : MnemonicAlias<"usubaddx", "usax">;
// 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 3732fd2..8c69056 100644
--- a/test/MC/ARM/basic-thumb2-instructions.s
+++ b/test/MC/ARM/basic-thumb2-instructions.s
@@ -2912,3 +2912,21 @@
@ CHECK: usat16 r2, #2, r7 @ encoding: [0xa7,0xf3,0x02,0x02]
@ CHECK: usat16 r3, #15, r5 @ encoding: [0xa5,0xf3,0x0f,0x03]
+
+
+@------------------------------------------------------------------------------
+@ USAX
+@------------------------------------------------------------------------------
+ usax r2, r3, r4
+ it ne
+ usaxne r6, r1, r9
+ usubaddx r2, r3, r4
+ it ne
+ usubaddxne r6, r1, r9
+
+@ CHECK: usax r2, r3, r4 @ encoding: [0xe3,0xfa,0x44,0xf2]
+@ CHECK: it ne @ encoding: [0x18,0xbf]
+@ CHECK: usaxne r6, r1, r9 @ encoding: [0xe1,0xfa,0x49,0xf6]
+@ CHECK: usax r2, r3, r4 @ encoding: [0xe3,0xfa,0x44,0xf2]
+@ CHECK: it ne @ encoding: [0x18,0xbf]
+@ CHECK: usaxne r6, r1, r9 @ encoding: [0xe1,0xfa,0x49,0xf6]
