Rewrite a test to count emitted instructions without using -stats

Also removed the comments of "should produce..." because they completely
don't match the actually produced output.

llvm-svn: 176381

llvm/test/CodeGen/Thumb/iabs.ll

@@ -1,22 +1,20 @@
-; RUN: llc < %s -march=thumb -stats 2>&1 | \
-; RUN:   grep "4 .*Number of machine instrs printed"
-
-;; Integer absolute value, should produce something as good as:
-;; Thumb:
-;;   movs r0, r0
-;;   bpl
-;;   rsb r0, r0, #0 (with opitmization, bpl + rsb is if-converted into rsbmi)
-;;   bx lr
+; RUN: llc < %s -march=thumb -filetype=obj -o %t.o
+; RUN: llvm-objdump -disassemble -arch=thumb %t.o | FileCheck %s
 
 define i32 @test(i32 %a) {
         %tmp1neg = sub i32 0, %a
         %b = icmp sgt i32 %a, -1
         %abs = select i1 %b, i32 %a, i32 %tmp1neg
         ret i32 %abs
-; CHECK:  movs r0, r0
-; CHECK:  bpl
-; CHECK:  rsb r0, r0, #0
-; CHECK:  bx lr
+
+; This test just checks that 4 instructions were emitted
+
+; CHECK:      {{^.text:}}
+; CHECK-NEXT: 0:
+; CHECK-NEXT: 2:
+; CHECK-NEXT: 4:
+; CHECK-NEXT: 6:
+
+; CHECK-NOT: 8:
 }
 
-