[Hexagon] NFC. Adding a number of packet correctness tests.

llvm-svn: 253000

llvm/test/MC/Hexagon/capitalizedEndloop.s

@@ -0,0 +1,29 @@
+# RUN: llvm-mc -triple=hexagon -filetype=obj %s | llvm-objdump -d -r - | FileCheck %s
+#
+
+# Verify that capitaizled endloops work
+
+	{ R0 = mpyi(R0,R0) } : endloop0
+	{ R0 = mpyi(R0,R0) } : ENDLOOP0
+	{ R0 = mpyi(R0,R0) }:endloop0
+
+	{ R0 = mpyi(R0,R0) } : endloop1
+	{ R0 = mpyi(R0,R0) } : ENDLOOP1
+	{ R0 = mpyi(R0,R0) }:endloop1
+
+	{ R0 = mpyi(R0,R0) } : endloop0 : endloop1
+	{ R0 = mpyi(R0,R0) } : ENDLOOP0 : ENDLOOP1
+	{ R0 = mpyi(R0,R0) }:endloop0:endloop1
+
+# CHECK: r0 = mpyi(r0, r0)
+# CHECK: :endloop0
+# CHECK: :endloop0
+# CHECK: :endloop0
+# CHECK: :endloop1
+# CHECK: :endloop1
+# CHECK: :endloop1
+# CHECK: :endloop0 :endloop1
+# CHECK: :endloop0 :endloop1
+# CHECK: :endloop0 :endloop1
+
+

llvm/test/MC/Hexagon/dcfetch.s

@@ -0,0 +1,15 @@
+# RUN: llvm-mc -triple=hexagon -filetype=obj -mno-pairing %s -o %t; llvm-objdump -d %t | FileCheck %s
+
+# Check that DCFETCH is correctly shuffled.
+
+	{ dcfetch(r2 + #0); r1 = memw(r2) }
+# CHECK: 9402c000
+
+# Bug 17424: This should be a legal packet
+{
+  P3 = SP1LOOP0(#8,R18)
+  R7:6 = MEMUBH(R4++#4)
+  R13:12 = VALIGNB(R11:10,R9:8,P2)
+  DCFETCH(R5+#(8+0))
+}
+# CHECK-NOT: error:

llvm/test/MC/Hexagon/empty_asm.s

@@ -0,0 +1,15 @@
+# RUN: llvm-mc -triple=hexagon -filetype=asm %s -o - | FileCheck %s
+
+# Verify empty packets aren't printed
+barrier
+{}
+barrier
+# CHECK: {
+# CHECK-NEXT: barrier
+# CHECK-NEXT: }
+# CHECK-NOT: }
+# CHECK: {
+# CHECK-NEXT: barrier
+# CHECK-NEXT: }
+
+

llvm/test/MC/Hexagon/endloop.s

@@ -0,0 +1,19 @@
+# RUN: llvm-mc -triple=hexagon -filetype=asm %s 2>%t; FileCheck %s <%t
+
+# Check that a branch in an end-loop packet is caught.
+
+1:
+{
+	r0 = #1
+	p0 = cmp.eq (r1, r2)
+	if (p0) jump 1b
+}:endloop0
+
+2:
+{
+        r0 = #1
+        p0 = cmp.eq (r1, r2)
+        if (p0) jump 2b
+}:endloop1
+
+# CHECK: rror: packet marked with `:endloop{{.}}' cannot contain instructions that modify register

llvm/test/MC/Hexagon/relaxed_newvalue.s

@@ -0,0 +1,10 @@
+# RUN: llvm-mc -triple=hexagon -filetype=obj %s | llvm-objdump -d - | FileCheck %s
+# Make sure relaxation doesn't hinder newvalue calculation
+
+#CHECK: r18 = add(r2, #-6)
+#CHECK-NEXT: immext(#0)
+#CHECK-NEXT: if (!cmp.gt(r18.new, #1)) jump:t
+{
+  r18 = add(r2, #-6)
+  if (!cmp.gt(r18.new, #1)) jump:t .unknown
+}