diff options
Diffstat (limited to 'test/Transforms/LoopUnroll/runtime-loop.ll')
| -rw-r--r-- | test/Transforms/LoopUnroll/runtime-loop.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/Transforms/LoopUnroll/runtime-loop.ll b/test/Transforms/LoopUnroll/runtime-loop.ll index 3bec939178a..9e78edfb25e 100644 --- a/test/Transforms/LoopUnroll/runtime-loop.ll +++ b/test/Transforms/LoopUnroll/runtime-loop.ll @@ -113,6 +113,39 @@ for.end: ; preds = %for.cond.for.end_cr ret i16 %res.0.lcssa } +; Test run-time unrolling disable metadata. +; CHECK: for.body: +; CHECK-NOT: for.body.prol: + +define zeroext i16 @test2(i16* nocapture %p, i32 %len) nounwind uwtable readonly { +entry: + %cmp2 = icmp eq i32 %len, 0 + br i1 %cmp2, label %for.end, label %for.body + +for.body: ; preds = %for.body, %entry + %p.addr.05 = phi i16* [ %incdec.ptr, %for.body ], [ %p, %entry ] + %len.addr.04 = phi i32 [ %sub, %for.body ], [ %len, %entry ] + %res.03 = phi i32 [ %add, %for.body ], [ 0, %entry ] + %incdec.ptr = getelementptr inbounds i16, i16* %p.addr.05, i64 1 + %0 = load i16, i16* %p.addr.05, align 2 + %conv = zext i16 %0 to i32 + %add = add i32 %conv, %res.03 + %sub = add nsw i32 %len.addr.04, -2 + %cmp = icmp eq i32 %sub, 0 + br i1 %cmp, label %for.cond.for.end_crit_edge, label %for.body, !llvm.loop !0 + +for.cond.for.end_crit_edge: ; preds = %for.body + %phitmp = trunc i32 %add to i16 + br label %for.end + +for.end: ; preds = %for.cond.for.end_crit_edge, %entry + %res.0.lcssa = phi i16 [ %phitmp, %for.cond.for.end_crit_edge ], [ 0, %entry ] + ret i16 %res.0.lcssa +} + +!0 = distinct !{!0, !1} +!1 = !{!"llvm.loop.unroll.runtime.disable"} + ; CHECK: !0 = distinct !{!0, !1} ; CHECK: !1 = !{!"llvm.loop.unroll.disable"} |