Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5

external/llvm/test/Transforms/LoopUnroll/pr33437.ll

@@ -0,0 +1,43 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; 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 [[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 %next
+
+loopexit:
+  ret void
+
+next:
+  br label %loop
+
+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 %loop, label %loopexit
+}