[LoopUnroll] Make the test for PR33437 actually useful.

I forgot to specify -unroll-loop-peel, making this test not
really effective. While here, adjust some details (naming and
run line). Thanks to Sanjoy and Michael Z. for pointing out in
their post-commit reviews.

llvm-svn: 312015

1 files changed, 27 insertions, 14 deletions

diff --git a/llvm/test/Transforms/LoopUnroll/pr33437.ll b/llvm/test/Transforms/LoopUnroll/pr33437.ll
index 58fa91f4b9a..210875b6ca4 100644
--- a/llvm/test/Transforms/LoopUnroll/pr33437.ll
+++ b/llvm/test/Transforms/LoopUnroll/pr33437.ll
@@ -1,30 +1,43 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -loop-unroll %s -S | FileCheck %s
+; RUN: opt -S -loop-unroll -unroll-peel-count=1 < %s | FileCheck %s
 
 declare zeroext i8 @patatino()
 
 define fastcc void @tinky() {
 ; CHECK-LABEL: @tinky(
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    br label [[FOR_COND93:%.*]]
-; CHECK:       for.cond93:
-; CHECK-NEXT:    br label [[FOR_BODY198:%.*]]
-; CHECK:       for.body198:
-; CHECK-NEXT:    [[CALL593:%.*]] = tail call zeroext i8 @patatino()
+; CHECK-NEXT:    br label [[NEXT:%.*]]
+; CHECK:       loopexit:
 ; CHECK-NEXT:    ret void
+; CHECK:       next:
+; CHECK-NEXT:    br label [[LOOP_PEEL_BEGIN:%.*]]
+; CHECK:       loop.peel.begin:
+; CHECK-NEXT:    br label [[LOOP_PEEL:%.*]]
+; CHECK:       loop.peel:
+; CHECK-NEXT:    [[CALL593_PEEL:%.*]] = tail call zeroext i8 @patatino()
+; CHECK-NEXT:    br i1 false, label [[LOOP_PEEL_NEXT:%.*]], label [[LOOPEXIT:%.*]]
+; CHECK:       loop.peel.next:
+; CHECK-NEXT:    br label [[LOOP_PEEL_NEXT1:%.*]]
+; CHECK:       loop.peel.next1:
+; CHECK-NEXT:    br label [[NEXT_PEEL_NEWPH:%.*]]
+; CHECK:       next.peel.newph:
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[CALL593:%.*]] = tail call zeroext i8 @patatino()
+; CHECK-NEXT:    br label [[LOOPEXIT]]
 ;
 entry:
-  br label %for.cond93
+  br label %next
 
-for.cond93.loopexit:
+loopexit:
   ret void
 
-for.cond93:
-  br label %for.body198
+next:
+  br label %loop
 
-for.body198:
-  %l_249.12 = phi i8 [ undef, %for.cond93 ], [ %call593, %for.body198 ]
-  %l_522.01 = phi i32 [ 0, %for.cond93 ], [ 1, %for.body198 ]
+loop:
+  %a = phi i8 [ undef, %next ], [ %call593, %loop ]
+  %b = phi i32 [ 0, %next ], [ 1, %loop ]
   %call593 = tail call zeroext i8 @patatino()
-  br i1 false, label %for.body198, label %for.cond93.loopexit
+  br i1 false, label %loop, label %loopexit
 }