diff options
Diffstat (limited to 'llvm/test/Transforms/LoopRotate/vect.omp.persistence.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopRotate/vect.omp.persistence.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopRotate/vect.omp.persistence.ll b/llvm/test/Transforms/LoopRotate/vect.omp.persistence.ll new file mode 100644 index 00000000000..6a1865499d3 --- /dev/null +++ b/llvm/test/Transforms/LoopRotate/vect.omp.persistence.ll @@ -0,0 +1,34 @@ +; RUN: opt < %s -loop-rotate -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" + +; Ensure that "llvm.loop.vectorize.enable" metadata was not lost after loop-rotate. +; In past LoopRotate was clearing that metadata. +; +; See http://reviews.llvm.org/D3348 for details. + +; CHECK-LABEL: @foo +; CHECK: loop_cond: +; CHECK-NOT: loop-inc +; CHECK: br i1 %cmp, label %return, label %loop_cond, !llvm.loop !0 +; CHECK: !0 = distinct !{!0, !1} +; CHECK: !1 = !{!"llvm.loop.vectorize.enable", i1 true} +define i32 @foo(i32 %a) { +entry: + br label %loop_cond + +loop_cond: + %indx = phi i32 [ 1, %entry ], [ %inc, %loop_inc ] + %cmp = icmp ne i32 %indx, %a + br i1 %cmp, label %return, label %loop_inc + +loop_inc: + %inc = add i32 %indx, 1 + br label %loop_cond, !llvm.loop !0 + +return: + ret i32 0 +} + +!0 = !{!0, !1} +!1 = !{!"llvm.loop.vectorize.enable", i1 true} |
