| ; RUN: opt -passes='loop-unroll-full' -disable-verify -disable-loop-unrolling=true --mtriple x86_64-pc-linux-gnu -S -o - %s | FileCheck %s |
| |
| ; This checks that the loop full unroller will fire in the new pass manager |
| ; when forced via #pragma in the source (or annotation in the code). |
| |
| ; Completely unroll the inner loop |
| ; CHECK-LABEL: @foo |
| ; CHECK: br i1 |
| ; CHECK-NOT: br i1 |
| |
| ; Function Attrs: noinline nounwind optnone uwtable |
| define void @foo() local_unnamed_addr #0 { |
| bb: |
| %tmp = alloca [5 x ptr], align 16 |
| br label %bb7.preheader |
| |
| bb3.loopexit: ; preds = %bb10 |
| %spec.select.lcssa = phi i32 [ %spec.select, %bb10 ] |
| %tmp5.not = icmp eq i32 %spec.select.lcssa, 0 |
| br i1 %tmp5.not, label %bb24, label %bb7.preheader |
| |
| bb7.preheader: ; preds = %bb3.loopexit, %bb |
| %tmp1.06 = phi i32 [ 5, %bb ], [ %spec.select.lcssa, %bb3.loopexit ] |
| br label %bb10 |
| |
| bb10: ; preds = %bb10, %bb7.preheader |
| %indvars.iv = phi i64 [ 0, %bb7.preheader ], [ %indvars.iv.next, %bb10 ] |
| %tmp1.14 = phi i32 [ %tmp1.06, %bb7.preheader ], [ %spec.select, %bb10 ] |
| %tmp13 = getelementptr inbounds [5 x ptr], ptr %tmp, i64 0, i64 %indvars.iv |
| %tmp14 = load ptr, ptr %tmp13, align 8 |
| %tmp15.not = icmp ne ptr %tmp14, null |
| %tmp18 = sext i1 %tmp15.not to i32 |
| %spec.select = add nsw i32 %tmp1.14, %tmp18 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 5 |
| br i1 %exitcond.not, label %bb3.loopexit, label %bb10, !llvm.loop !1 |
| |
| bb24: ; preds = %bb3.loopexit |
| ret void |
| } |
| |
| attributes #0 = { nounwind uwtable } |
| |
| !llvm.module.flags = !{!0} |
| |
| !0 = !{i32 1, !"wchar_size", i32 4} |
| !1 = distinct !{!1, !2} |
| !2 = !{!"llvm.loop.unroll.full"} |
