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‎llvm/test/Transforms/LoopVectorize/RISCV/dbg-tail-folding-by-evl.ll‎

Lines changed: 74 additions & 5 deletions
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@@ -1,14 +1,57 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -passes=loop-vectorize \
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; RUN: -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue \
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; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s --check-prefix=IF-EVL
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; RUN: opt -passes=loop-vectorize \
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; RUN: -prefer-predicate-over-epilogue=scalar-epilogue \
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; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s --check-prefix=NO-VP
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; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s
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target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
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define void @reverse_store(ptr %a, i64 %n) !dbg !4 {
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; CHECK-LABEL: define void @reverse_store(
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; CHECK-SAME: ptr [[A:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] !dbg [[DBG4:![0-9]+]] {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: #dbg_value(ptr [[A]], [[META11:![0-9]+]], !DIExpression(), [[META15:![0-9]+]])
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; CHECK-NEXT: #dbg_value(i64 [[N]], [[META12:![0-9]+]], !DIExpression(), [[META15]])
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; CHECK-NEXT: #dbg_value(i64 [[N]], [[META13:![0-9]+]], !DIExpression(DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value), [[META16:![0-9]+]])
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[N]], 1, !dbg [[DBG17:![0-9]+]]
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; CHECK-NEXT: [[UMIN:%.*]] = call i64 @llvm.umin.i64(i64 [[N]], i64 1), !dbg [[DBG17]]
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[TMP0]], [[UMIN]], !dbg [[DBG17]]
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; CHECK-NEXT: br label %[[VECTOR_PH:.*]], !dbg [[DBG17]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: [[TMP2:%.*]] = call <vscale x 4 x i64> @llvm.stepvector.nxv4i64()
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 4 x i64> poison, i64 [[N]], i64 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 4 x i64> [[BROADCAST_SPLATINSERT]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP3:%.*]] = mul nsw <vscale x 4 x i64> [[TMP2]], splat (i64 -1)
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; CHECK-NEXT: [[INDUCTION:%.*]] = add nsw <vscale x 4 x i64> [[BROADCAST_SPLAT]], [[TMP3]]
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; CHECK-NEXT: br label %[[VECTOR_BODY:.*]], !dbg [[DBG17]]
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; CHECK: [[VECTOR_BODY]]:
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; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 4 x i64> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[AVL:%.*]] = phi i64 [ [[TMP1]], %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP4:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 4, i1 true)
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; CHECK-NEXT: [[TMP5:%.*]] = zext i32 [[TMP4]] to i64
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; CHECK-NEXT: [[TMP6:%.*]] = mul nsw i64 -1, [[TMP5]]
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 4 x i64> poison, i64 [[TMP6]], i64 0
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; CHECK-NEXT: [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 4 x i64> [[BROADCAST_SPLATINSERT1]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP7:%.*]] = add nsw <vscale x 4 x i64> [[VEC_IND]], splat (i64 -1), !dbg [[DBG18:![0-9]+]]
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; CHECK-NEXT: [[TMP8:%.*]] = extractelement <vscale x 4 x i64> [[TMP7]], i32 0
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds nuw i32, ptr [[A]], i64 [[TMP8]], !dbg [[DBG19:![0-9]+]]
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; CHECK-NEXT: [[TMP10:%.*]] = trunc nuw nsw <vscale x 4 x i64> [[TMP7]] to <vscale x 4 x i32>, !dbg [[DBG21:![0-9]+]]
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; CHECK-NEXT: [[TMP11:%.*]] = zext i32 [[TMP4]] to i64, !dbg [[DBG21]]
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; CHECK-NEXT: [[TMP12:%.*]] = mul i64 0, [[TMP11]], !dbg [[DBG21]]
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; CHECK-NEXT: [[TMP13:%.*]] = sub i64 [[TMP11]], 1, !dbg [[DBG21]]
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; CHECK-NEXT: [[TMP14:%.*]] = mul i64 -1, [[TMP13]], !dbg [[DBG21]]
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; CHECK-NEXT: [[TMP15:%.*]] = getelementptr i32, ptr [[TMP9]], i64 [[TMP12]], !dbg [[DBG21]]
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; CHECK-NEXT: [[TMP16:%.*]] = getelementptr i32, ptr [[TMP15]], i64 [[TMP14]], !dbg [[DBG21]]
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; CHECK-NEXT: [[VP_REVERSE:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vp.reverse.nxv4i32(<vscale x 4 x i32> [[TMP10]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP4]]), !dbg [[DBG21]]
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; CHECK-NEXT: call void @llvm.vp.store.nxv4i32.p0(<vscale x 4 x i32> [[VP_REVERSE]], ptr align 4 [[TMP16]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP4]]), !dbg [[DBG21]]
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; CHECK-NEXT: [[AVL_NEXT]] = sub nuw i64 [[AVL]], [[TMP5]]
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; CHECK-NEXT: [[VEC_IND_NEXT]] = add nsw <vscale x 4 x i64> [[VEC_IND]], [[BROADCAST_SPLAT2]]
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; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i64 [[AVL_NEXT]], 0
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; CHECK-NEXT: br i1 [[TMP17]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP22:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: br label %[[FOR_COND_CLEANUP:.*]]
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; CHECK: [[FOR_COND_CLEANUP]]:
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; CHECK-NEXT: ret void, !dbg [[DBG25:![0-9]+]]
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;
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entry:
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#dbg_value(ptr %a, !11, !DIExpression(), !15)
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#dbg_value(i64 %n, !12, !DIExpression(), !15)
@@ -62,3 +105,29 @@ for.body: ; preds = %entry, %for.body
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!25 = distinct !{!25, !17, !26, !27}
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!26 = !DILocation(line: 3, column: 14, scope: !14)
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!27 = !{!"llvm.loop.vectorize.enable", i1 true}
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;
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; CHECK: [[META0:![0-9]+]] = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: [[META1:![0-9]+]], producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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; CHECK: [[META1]] = !DIFile(filename: "{{.*}}dbg-tail-folding-by-evl.cpp", directory: {{.*}})
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; CHECK: [[DBG4]] = distinct !DISubprogram(name: "reverse_store", linkageName: "_Z13reverse_storePil", scope: [[META1]], file: [[META1]], line: 1, type: [[META5:![0-9]+]], scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: [[META0]], retainedNodes: [[META10:![0-9]+]])
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; CHECK: [[META5]] = !DISubroutineType(types: [[META6:![0-9]+]])
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; CHECK: [[META6]] = !{null, [[META7:![0-9]+]], [[META9:![0-9]+]]}
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; CHECK: [[META7]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: [[META8:![0-9]+]], size: 64)
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; CHECK: [[META8]] = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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; CHECK: [[META9]] = !DIBasicType(name: "long", size: 64, encoding: DW_ATE_signed)
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; CHECK: [[META10]] = !{[[META11]], [[META12]], [[META13]]}
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; CHECK: [[META11]] = !DILocalVariable(name: "a", arg: 1, scope: [[DBG4]], file: [[META1]], line: 1, type: [[META7]])
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; CHECK: [[META12]] = !DILocalVariable(name: "n", arg: 2, scope: [[DBG4]], file: [[META1]], line: 1, type: [[META9]])
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; CHECK: [[META13]] = !DILocalVariable(name: "i", scope: [[META14:![0-9]+]], file: [[META1]], line: 2, type: [[META8]])
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; CHECK: [[META14]] = distinct !DILexicalBlock(scope: [[DBG4]], file: [[META1]], line: 2, column: 5)
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; CHECK: [[META15]] = !DILocation(line: 0, scope: [[DBG4]])
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; CHECK: [[META16]] = !DILocation(line: 0, scope: [[META14]])
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; CHECK: [[DBG17]] = !DILocation(line: 2, column: 5, scope: [[META14]])
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; CHECK: [[DBG18]] = !DILocation(line: 2, scope: [[META14]])
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; CHECK: [[DBG19]] = !DILocation(line: 3, column: 7, scope: [[META20:![0-9]+]])
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; CHECK: [[META20]] = distinct !DILexicalBlock(scope: [[META14]], file: [[META1]], line: 2, column: 5)
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; CHECK: [[DBG21]] = !DILocation(line: 3, column: 12, scope: [[META20]])
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; CHECK: [[LOOP22]] = distinct !{[[LOOP22]], [[META23:![0-9]+]], [[META24:![0-9]+]]}
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; CHECK: [[META23]] = !{!"llvm.loop.isvectorized", i32 1}
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; CHECK: [[META24]] = !{!"llvm.loop.unroll.runtime.disable"}
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; CHECK: [[DBG25]] = !DILocation(line: 4, column: 1, scope: [[DBG4]])
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;.

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