From a2f9d4e053ecdbd71e75459e93d4bd982e2ae15b Mon Sep 17 00:00:00 2001 From: Cameron Zwarich Date: Fri, 11 Feb 2011 00:49:27 +0000 Subject: [PATCH] Add a test for the LSR issue exposed by r125254. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125325 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../hoist-parent-preheader.ll | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 test/Transforms/LoopStrengthReduce/hoist-parent-preheader.ll diff --git a/test/Transforms/LoopStrengthReduce/hoist-parent-preheader.ll b/test/Transforms/LoopStrengthReduce/hoist-parent-preheader.ll new file mode 100644 index 00000000000..7982fbc8c4a --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/hoist-parent-preheader.ll @@ -0,0 +1,32 @@ +; RUN: opt < %s -loop-reduce -verify +target triple = "x86_64-apple-darwin10" + +define void @myquicksort(i8* %a) nounwind ssp { +entry: + br i1 undef, label %loop1, label %return + +loop1: ; preds = %bb13.loopexit, %entry + %indvar419 = phi i64 [ %indvar.next420, %loop2.exit ], [ 0, %entry ] + %tmp474 = shl i64 %indvar419, 2 + %tmp484 = add i64 %tmp474, 4 + br label %loop2 + +loop2: ; preds = %loop1, %loop2.backedge + %indvar414 = phi i64 [ %indvar.next415, %loop2.backedge ], [ 0, %loop1 ] + %tmp473 = mul i64 %indvar414, -4 + %tmp485 = add i64 %tmp484, %tmp473 + %storemerge4 = getelementptr i8* %a, i64 %tmp485 + %0 = icmp ugt i8* %storemerge4, %a + br i1 false, label %loop2.exit, label %loop2.backedge + +loop2.backedge: ; preds = %loop2 + %indvar.next415 = add i64 %indvar414, 1 + br label %loop2 + +loop2.exit: ; preds = %loop2 + %indvar.next420 = add i64 %indvar419, 1 + br i1 undef, label %loop1, label %return + +return: ; preds = %loop2.exit, %entry + ret void +} -- 2.34.1