3808ba78de
Use VPIRBasicBlock to wrap the middle block and implement patching up branches in predecessors in VPIRBasicBlock::execute. The IR middle block is only created after skeleton creation. Initially a regular VPBasicBlock is created, which will later be replaced by a VPIRBasicBlock once the middle IR basic block has been created. Note that this slightly changes the order of instructions created in the middle block; code generated by recipe execution in the middle block will now be inserted before the terminator (and in between the compare to used by the terminator). The original order will be restored in https://github.com/llvm/llvm-project/pull/92651. PR: https://github.com/llvm/llvm-project/pull/95816
84 lines
3.4 KiB
LLVM
84 lines
3.4 KiB
LLVM
; Confirm that the line numbers for the middle.block operations are all the
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; same as the start of the loop.
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; RUN: opt -S -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=4 <%s | FileCheck %s
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;
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; CHECK: middle.block:
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; CHECK-NEXT: %{{.*}}= icmp eq i64{{.*}}, !dbg ![[DL:[0-9]+]]
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; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL]]
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; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL]]
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; CHECK-NEXT: %{{.*}}= add <4 x i32>{{.*}}, !dbg ![[DL]]
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; CHECK-NEXT: %{{.*}}= call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> {{.*}}), !dbg ![[DL]]
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; CHECK-NEXT: br i1 %{{.*}}, !dbg ![[DL]]
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; CHECK: ![[DL]] = !DILocation(line: 5,
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; This IR can be generated by running:
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; clang -gmlt -S src.cpp -emit-llvm -mllvm -opt-bisect-limit=56 -O2 -o -
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;
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; Where src.cpp contains:
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; int foo(int count, int *bar)
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; {
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; int ret = count;
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; int tmp;
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; for (int j = 0; j < count; j++) {
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; tmp = bar[j];
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; ret += tmp;
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; }
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;
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; return ret;
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; }
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define dso_local i32 @"foo"(i32 %count, ptr nocapture readonly %bar) local_unnamed_addr !dbg !8 {
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entry:
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%cmp8 = icmp sgt i32 %count, 0, !dbg !10
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br i1 %cmp8, label %for.body.preheader, label %for.cond.cleanup, !dbg !10
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for.body.preheader: ; preds = %entry
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%wide.trip.count = zext i32 %count to i64
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br label %for.body, !dbg !11
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for.cond.cleanup.loopexit: ; preds = %for.body
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%add.lcssa = phi i32 [ %add, %for.body ], !dbg !12
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br label %for.cond.cleanup, !dbg !13
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for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
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%ret.0.lcssa = phi i32 [ %count, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ], !dbg !14
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ret i32 %ret.0.lcssa, !dbg !13
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for.body: ; preds = %for.body, %for.body.preheader
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%ret.09 = phi i32 [ %count, %for.body.preheader ], [ %add, %for.body ]
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%arrayidx = getelementptr inbounds i32, ptr %bar, i64 %indvars.iv, !dbg !11
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%0 = load i32, ptr %arrayidx, align 4, !dbg !11, !tbaa !15
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%add = add nsw i32 %0, %ret.09, !dbg !12
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count, !dbg !10
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br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body, !dbg !10, !llvm.loop !19
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "src.cpp", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"CodeView", i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 2}
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!6 = !{i32 7, !"PIC Level", i32 2}
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!7 = !{!""}
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!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !9, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!9 = !DISubroutineType(types: !2)
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!10 = !DILocation(line: 5, scope: !8)
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!11 = !DILocation(line: 6, scope: !8)
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!12 = !DILocation(line: 7, scope: !8)
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!13 = !DILocation(line: 10, scope: !8)
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!14 = !DILocation(line: 0, scope: !8)
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!15 = !{!16, !16, i64 0}
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!16 = !{!"int", !17, i64 0}
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!17 = !{!"omnipotent char", !18, i64 0}
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!18 = !{!"Simple C++ TBAA"}
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!19 = distinct !{!19, !10, !20}
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!20 = !DILocation(line: 8, scope: !8)
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