724a63ba8b
Update hasChecks to use getSCEV/MemRuntimeChecks(), which automatically handles checking for known-false checks. This improves a few cases where we previously did not add metadata to disable runtime unrolling, due to runtime checks, even though no runtime checks are needed.
156 lines
7.9 KiB
LLVM
156 lines
7.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes=loop-vectorize -force-vector-width=4 -S %s | FileCheck %s
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define void @test(ptr %A, i32 %x) {
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; CHECK-LABEL: define void @test(
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; CHECK-SAME: ptr [[A:%.*]], i32 [[X:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_SCEVCHECK:.*]]
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; CHECK: [[VECTOR_SCEVCHECK]]:
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; CHECK-NEXT: [[IDENT_CHECK:%.*]] = icmp ne i32 [[X]], 1
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; CHECK-NEXT: br i1 [[IDENT_CHECK]], label %[[SCALAR_PH]], label %[[VECTOR_PH:.*]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
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; CHECK: [[VECTOR_BODY]]:
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[OFFSET_IDX]] to i32
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; CHECK-NEXT: [[TMP3:%.*]] = add nuw nsw i64 [[OFFSET_IDX]], 1
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; CHECK-NEXT: [[TMP4:%.*]] = trunc i64 [[TMP3]] to i32
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; CHECK-NEXT: [[TMP5:%.*]] = zext i32 [[TMP4]] to i64
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[TMP5]]
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP6]], align 4
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; CHECK-NEXT: [[TMP8:%.*]] = zext i32 [[TMP0]] to i64
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; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[TMP8]]
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; CHECK-NEXT: store <4 x float> [[WIDE_LOAD]], ptr [[TMP9]], align 4
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[OFFSET_IDX]], 4
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; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
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; CHECK-NEXT: br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: br label %[[EXIT:.*]]
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; CHECK: [[SCALAR_PH]]:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_SCEVCHECK]] ]
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[IV_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[T_IV_NEXT:%.*]] = trunc i64 [[IV_NEXT]] to i32
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; CHECK-NEXT: [[MUL_IV_NEXT:%.*]] = mul i32 [[T_IV_NEXT]], [[X]]
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; CHECK-NEXT: [[IDX_1:%.*]] = zext i32 [[MUL_IV_NEXT]] to i64
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; CHECK-NEXT: [[ARRAYIDX1215:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IDX_1]]
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; CHECK-NEXT: [[LV:%.*]] = load float, ptr [[ARRAYIDX1215]], align 4
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; CHECK-NEXT: [[T_IV:%.*]] = trunc i64 [[IV]] to i32
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; CHECK-NEXT: [[MUL_IV:%.*]] = mul i32 [[T_IV]], [[X]]
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; CHECK-NEXT: [[IDX_2:%.*]] = zext i32 [[MUL_IV]] to i64
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; CHECK-NEXT: [[ARRAYIDX1209:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[IDX_2]]
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; CHECK-NEXT: store float [[LV]], ptr [[ARRAYIDX1209]], align 4
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; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], 1000
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; CHECK-NEXT: br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ %iv.next, %loop ], [ 0, %entry ]
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%iv.next = add nuw nsw i64 %iv, 1
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%t.iv.next = trunc i64 %iv.next to i32
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%mul.iv.next = mul i32 %t.iv.next, %x
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%idx.1 = zext i32 %mul.iv.next to i64
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%arrayidx1215 = getelementptr inbounds float, ptr %A, i64 %idx.1
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%lv = load float, ptr %arrayidx1215, align 4
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%t.iv = trunc i64 %iv to i32
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%mul.iv = mul i32 %t.iv, %x
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%idx.2 = zext i32 %mul.iv to i64
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%arrayidx1209 = getelementptr inbounds float, ptr %A, i64 %idx.2
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store float %lv, ptr %arrayidx1209, align 4
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%ec = icmp eq i64 %iv.next, 1000
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; !llvm.loop.unroll.runtime.disable metadata should be added to the
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; scalar loop, as there are no runtime checks needed (or they can be proven
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; false).
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define void @diff_memcheck_known_false_for_vf_4(ptr %B, ptr %A, ptr %end) {
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; CHECK-LABEL: define void @diff_memcheck_known_false_for_vf_4(
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; CHECK-SAME: ptr [[B:%.*]], ptr [[A:%.*]], ptr [[END:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[END1:%.*]] = ptrtoint ptr [[END]] to i64
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; CHECK-NEXT: [[A_INT:%.*]] = ptrtoint ptr [[A]] to i64
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; CHECK-NEXT: [[B_CAST:%.*]] = ptrtoint ptr [[B]] to i64
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; CHECK-NEXT: [[PTR_SUB:%.*]] = sub i64 [[A_INT]], [[B_CAST]]
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; CHECK-NEXT: [[ADD_PTR11:%.*]] = getelementptr i8, ptr [[B]], i64 [[PTR_SUB]]
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; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[A_INT]], [[END1]]
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[TMP0]], 3
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; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 4
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; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
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; CHECK: [[VECTOR_PH]]:
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; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP2]], 4
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; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP2]], [[N_MOD_VF]]
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; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[N_VEC]], -8
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP3]]
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; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[N_VEC]], -8
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr i8, ptr [[ADD_PTR11]], i64 [[TMP5]]
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; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
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; CHECK: [[VECTOR_BODY]]:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
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; CHECK-NEXT: [[OFFSET_IDX:%.*]] = mul i64 [[INDEX]], -8
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; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[A]], i64 [[OFFSET_IDX]]
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr i64, ptr [[NEXT_GEP]], i32 0
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr i64, ptr [[TMP7]], i32 -3
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; CHECK-NEXT: store <4 x i64> zeroinitializer, ptr [[TMP8]], align 8
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP9]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
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; CHECK: [[MIDDLE_BLOCK]]:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
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; CHECK: [[SCALAR_PH]]:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi ptr [ [[TMP4]], %[[MIDDLE_BLOCK]] ], [ [[A]], %[[ENTRY]] ]
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; CHECK-NEXT: [[BC_RESUME_VAL2:%.*]] = phi ptr [ [[TMP6]], %[[MIDDLE_BLOCK]] ], [ [[ADD_PTR11]], %[[ENTRY]] ]
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[IV_1:%.*]] = phi ptr [ [[IV_1_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
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; CHECK-NEXT: [[IV_2:%.*]] = phi ptr [ [[IV_2_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL2]], %[[SCALAR_PH]] ]
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; CHECK-NEXT: [[IV_2_NEXT]] = getelementptr nusw i8, ptr [[IV_2]], i64 -8
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; CHECK-NEXT: [[IV_1_NEXT]] = getelementptr i8, ptr [[IV_1]], i64 -8
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; CHECK-NEXT: [[TMP10:%.*]] = load i64, ptr [[IV_2_NEXT]], align 8
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; CHECK-NEXT: store i64 0, ptr [[IV_1]], align 8
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; CHECK-NEXT: [[CMP_NOT_I_I_I_I:%.*]] = icmp eq ptr [[END]], [[IV_2]]
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; CHECK-NEXT: br i1 [[CMP_NOT_I_I_I_I]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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entry:
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%A.int = ptrtoint ptr %A to i64
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%B.cast = ptrtoint ptr %B to i64
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%ptr.sub = sub i64 %A.int, %B.cast
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%add.ptr11 = getelementptr i8, ptr %B, i64 %ptr.sub
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br label %loop
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loop:
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%iv.1 = phi ptr [ %iv.1.next, %loop ], [ %A, %entry ]
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%iv.2 = phi ptr [ %iv.2.next, %loop ], [ %add.ptr11, %entry ]
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%iv.2.next = getelementptr nusw i8, ptr %iv.2, i64 -8
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%iv.1.next = getelementptr i8, ptr %iv.1, i64 -8
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%2 = load i64, ptr %iv.2.next, align 8
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store i64 0, ptr %iv.1, align 8
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%cmp.not.i.i.i.i = icmp eq ptr %end, %iv.2
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br i1 %cmp.not.i.i.i.i, label %exit, label %loop
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exit:
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ret void
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}
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;.
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; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
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; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
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; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
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; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META1]]}
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; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
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; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]}
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;.
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