diff options
Diffstat (limited to 'test/Transforms/LoopStrengthReduce/pr12691.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/pr12691.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/pr12691.ll b/test/Transforms/LoopStrengthReduce/pr12691.ll new file mode 100644 index 0000000000..8399434343 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/pr12691.ll @@ -0,0 +1,34 @@ +; RUN: opt < %s -loop-reduce -S | FileCheck %s + +@d = common global i32 0, align 4 + +define void @fn2(i32 %x) nounwind uwtable { +entry: + br label %for.cond + +for.cond: + %g.0 = phi i32 [ 0, %entry ], [ %dec, %for.cond ] + %tobool = icmp eq i32 %x, 0 + %dec = add nsw i32 %g.0, -1 + br i1 %tobool, label %for.cond, label %for.end + +for.end: +; CHECK: %tmp1 = load i32* @d, align 4 +; CHECK-NEXT: %tmp2 = load i32* @d, align 4 +; CHECK-NEXT: %0 = sub i32 %tmp1, %tmp2 + + %tmp1 = load i32* @d, align 4 + %add = add nsw i32 %tmp1, %g.0 + %tmp2 = load i32* @d, align 4 + %tobool26 = icmp eq i32 %x, 0 + br i1 %tobool26, label %for.end5, label %for.body.lr.ph + +for.body.lr.ph: + %tobool3 = icmp ne i32 %tmp2, %add + br label %for.end5 + +for.end5: + ret void +} + + |