1cee313d2SEric Christopher; This test ensures loop versioning does not produce an invalid dominator tree 2cee313d2SEric Christopher; if the exit block of the loop (bb0) dominates the runtime check block 3cee313d2SEric Christopher; (bb1 will become the runtime check block). 4cee313d2SEric Christopher 579a1a5b3SRoman Lebedev; RUN: opt -passes=loop-distribute -enable-loop-distribute -verify-dom-info -S -o - %s > %t 679a1a5b3SRoman Lebedev; RUN: opt -passes=loop-simplify,loop-distribute -enable-loop-distribute -verify-dom-info -S -o - %s > %t 7cee313d2SEric Christopher; RUN: FileCheck --check-prefix CHECK-VERSIONING -input-file %t %s 8cee313d2SEric Christopher 979a1a5b3SRoman Lebedev; RUN: opt -passes=loop-versioning -verify-dom-info -S -o - %s > %t 1079a1a5b3SRoman Lebedev; RUN: opt -passes=loop-simplify,loop-versioning -verify-dom-info -S -o - %s > %t 11cee313d2SEric Christopher; RUN: FileCheck --check-prefix CHECK-VERSIONING -input-file %t %s 12cee313d2SEric Christopher 13cee313d2SEric Christopher@c1 = external global i16 14cee313d2SEric Christopher 15a74941daSFlorian Hahndefine void @f(i16 %a) { 16cee313d2SEric Christopher br label %bb0 17cee313d2SEric Christopher 18cee313d2SEric Christopherbb0: 19cee313d2SEric Christopher br label %bb1 20cee313d2SEric Christopher 21cee313d2SEric Christopherbb1: 22*055fb779SNikita Popov %tmp1 = load i16, ptr @c1 23cee313d2SEric Christopher br label %bb2 24cee313d2SEric Christopher 25cee313d2SEric Christopherbb2: 26cee313d2SEric Christopher %tmp2 = phi i16 [ %tmp1, %bb1 ], [ %tmp3, %bb2 ] 27*055fb779SNikita Popov %tmp4 = getelementptr inbounds [1 x i32], ptr undef, i32 0, i32 4 28*055fb779SNikita Popov store i32 1, ptr %tmp4 29*055fb779SNikita Popov %tmp5 = getelementptr inbounds [1 x i32], ptr undef, i32 0, i32 9 30*055fb779SNikita Popov store i32 0, ptr %tmp5 31cee313d2SEric Christopher %tmp3 = add i16 %tmp2, 1 32*055fb779SNikita Popov store i16 %tmp2, ptr @c1 33cee313d2SEric Christopher %tmp6 = icmp sle i16 %tmp3, 0 34cee313d2SEric Christopher br i1 %tmp6, label %bb2, label %bb0 35cee313d2SEric Christopher} 36cee313d2SEric Christopher 37cee313d2SEric Christopher; Simple check to make sure loop versioning happened. 38cee313d2SEric Christopher; CHECK-VERSIONING: bb2.lver.check: 39