| ; RUN: llc -march=hexagon -enable-pipeliner -pipeliner-max-stages=2 \ |
| ; RUN: -pipeliner-ignore-recmii -disable-hexagon-nv-schedule -stats -o /dev/null\ |
| ; RUN: -enable-aa-sched-mi < %s 2>&1 | FileCheck %s --check-prefix=STATS |
| ; REQUIRES: asserts |
| ; |
| ; Test that we generate the correct phis in the last epilog block when |
| ; allowing multiple stages. |
| ; |
| ; STATS: 1 pipeliner - Number of loops software pipelined |
| |
| ; Function Attrs: nounwind |
| define void @f0() #0 { |
| b0: |
| br i1 undef, label %b6, label %b1 |
| |
| b1: ; preds = %b0 |
| br i1 undef, label %b6, label %b2 |
| |
| b2: ; preds = %b1 |
| br label %b4 |
| |
| b3: ; preds = %b4, %b3 |
| %v0 = add nsw i32 0, 57344 |
| %v1 = trunc i32 %v0 to i16 |
| store i16 %v1, i16* null, align 2, !tbaa !0 |
| %v2 = getelementptr inbounds i8, i8* null, i32 undef |
| %v3 = load i8, i8* %v2, align 1, !tbaa !4 |
| %v4 = zext i8 %v3 to i32 |
| %v5 = shl nuw nsw i32 %v4, 6 |
| %v6 = add nsw i32 %v5, 57344 |
| %v7 = trunc i32 %v6 to i16 |
| store i16 %v7, i16* undef, align 2, !tbaa !0 |
| br i1 undef, label %b5, label %b3 |
| |
| b4: ; preds = %b5, %b2 |
| %v8 = phi i32 [ 0, %b2 ], [ %v9, %b5 ] |
| br label %b3 |
| |
| b5: ; preds = %b3 |
| %v9 = add i32 %v8, 1 |
| %v10 = icmp eq i32 %v9, undef |
| br i1 %v10, label %b6, label %b4 |
| |
| b6: ; preds = %b5, %b1, %b0 |
| ret void |
| } |
| |
| attributes #0 = { nounwind "target-cpu"="hexagonv55" } |
| |
| !0 = !{!1, !1, i64 0} |
| !1 = !{!"short", !2} |
| !2 = !{!"omnipotent char", !3} |
| !3 = !{!"Simple C/C++ TBAA"} |
| !4 = !{!2, !2, i64 0} |
