[Hexagon] Printing packet brackets when asm printing and adding a number of tests that test packet brackets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240051 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/Hexagon/postinc-offset.ll

@@ -0,0 +1,40 @@
+; RUN: llc -enable-aa-sched-mi -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
+
+; CHECK: {
+; CHECK: ={{ *}}memd([[REG0:(r[0-9]+)]]{{ *}}++{{ *}}#8)
+; CHECK-NOT: memw([[REG0]]{{ *}}+{{ *}}#0){{ *}}=
+; CHECK: }
+
+define void @main() #0 {
+cond.end.6:
+  store i32 -1, i32* undef, align 8, !tbaa !0
+  br label %polly.stmt.for.body.i
+
+if.then:
+  unreachable
+
+if.end:
+  ret void
+
+polly.stmt.for.body.i24:
+  %0 = extractelement <2 x i32> %add.ip_vec, i32 1
+  br i1 undef, label %if.end, label %if.then
+
+polly.stmt.for.body.i:
+  %add.ip_vec30 = phi <2 x i32> [ %add.ip_vec, %polly.stmt.for.body.i ], [ zeroinitializer, %cond.end.6 ]
+  %scevgep.phi = phi i32* [ %scevgep.inc, %polly.stmt.for.body.i ], [ undef, %cond.end.6 ]
+  %polly.indvar = phi i32 [ %polly.indvar_next, %polly.stmt.for.body.i ], [ 0, %cond.end.6 ]
+  %vector_ptr = bitcast i32* %scevgep.phi to <2 x i32>*
+  %_p_vec_full = load <2 x i32>, <2 x i32>* %vector_ptr, align 8
+  %add.ip_vec = add <2 x i32> %_p_vec_full, %add.ip_vec30
+  %polly.indvar_next = add nsw i32 %polly.indvar, 2
+  %polly.loop_cond = icmp slt i32 %polly.indvar, 4
+  %scevgep.inc = getelementptr i32, i32* %scevgep.phi, i32 2
+  br i1 %polly.loop_cond, label %polly.stmt.for.body.i, label %polly.stmt.for.body.i24
+}
+
+attributes #0 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!0 = !{!"int", !1}
+!1 = !{!"omnipotent char", !2}
+!2 = !{!"Simple C/C++ TBAA"}