[Hexagon] Adding test to make sure labels and register pairs are correctly parsed.

llvm-svn: 252968

llvm/test/MC/Hexagon/labels.s

@@ -0,0 +1,26 @@
+# RUN: llvm-mc -triple=hexagon -filetype=asm -o - %s | FileCheck %s
+
+# CHECK: a:
+a:
+
+# CHECK: r1:
+r1:
+
+# CHECK: r3:
+# CHECK: nop
+r3:nop
+
+# CHECK: r5:4 = combine(r5, r4)
+r5:4 = r5:4
+
+# CHECK: r0 = r1
+# CHECK: p0 = tstbit(r0, #10)
+# CHECK: if (!p0) jump
+1:r0=r1; p0=tstbit(r0, #10); if !p0 jump 1b;
+
+# CHECK: nop
+# CHECK: r1 = add(r1, #4)
+# CHECK: r5 = memw(r1 + #0)
+# CHECK: endloop0
+b: { r5 = memw(r1)
+     r1 = add(r1, #4) } : endloop0