e478a22d54
This put the onus on the caller to ensure the result type is big enough. In the unlikely event a cropped result is required then explicitly truncate a safe value.
78 lines
4.3 KiB
LLVM
78 lines
4.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=loop-vectorize -mtriple=aarch64-unknown -mattr=+sve -S %s | FileCheck %s
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define ptr @test(ptr %start.1, ptr %start.2, ptr %end) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[START_22:%.*]] = ptrtoint ptr [[START_2:%.*]] to i64
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; CHECK-NEXT: [[END1:%.*]] = ptrtoint ptr [[END:%.*]] to i64
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[END1]], -8
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[TMP0]], [[START_22]]
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; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 3
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; CHECK-NEXT: [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1
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; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
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; CHECK-NEXT: [[TMP5:%.*]] = mul nuw i64 [[TMP4]], 4
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP3]], [[TMP5]]
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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: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
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; CHECK-NEXT: [[TMP7:%.*]] = mul nuw i64 [[TMP6]], 4
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; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[TMP3]], [[TMP7]]
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; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[TMP3]], [[N_MOD_VF]]
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; CHECK-NEXT: [[TMP10:%.*]] = call i64 @llvm.vscale.i64()
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; CHECK-NEXT: [[TMP11:%.*]] = mul nuw i64 [[TMP10]], 4
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; CHECK-NEXT: [[TMP8:%.*]] = mul i64 [[N_VEC]], 8
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; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[START_1:%.*]], i64 [[TMP8]]
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; CHECK-NEXT: [[TMP9:%.*]] = mul i64 [[N_VEC]], 8
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; CHECK-NEXT: [[IND_END3:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[TMP9]]
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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: [[TMP30:%.*]] = getelementptr i8, ptr [[START_2]], i64 [[OFFSET_IDX]]
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; CHECK-NEXT: [[TMP32:%.*]] = getelementptr i64, ptr [[TMP30]], i32 0
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; CHECK-NEXT: [[TMP33:%.*]] = call i64 @llvm.vscale.i64()
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; CHECK-NEXT: [[TMP34:%.*]] = mul nuw i64 [[TMP33]], 2
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; CHECK-NEXT: [[TMP35:%.*]] = getelementptr i64, ptr [[TMP30]], i64 [[TMP34]]
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; CHECK-NEXT: store <vscale x 2 x i64> zeroinitializer, ptr [[TMP32]], align 8
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; CHECK-NEXT: store <vscale x 2 x i64> zeroinitializer, ptr [[TMP35]], align 8
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP11]]
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; CHECK-NEXT: [[TMP36:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP36]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[TMP3]], [[N_VEC]]
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; CHECK-NEXT: [[IND_ESCAPE:%.*]] = getelementptr i8, ptr [[IND_END]], i64 -8
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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 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[START_1]], [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[BC_RESUME_VAL4:%.*]] = phi ptr [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ [[START_2]], [[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 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_1_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[IV_2:%.*]] = phi ptr [ [[BC_RESUME_VAL4]], [[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: store i64 0, ptr [[IV_2]], align 8
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; CHECK-NEXT: [[IV_2_NEXT]] = getelementptr inbounds ptr, ptr [[IV_2]], i64 1
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; CHECK-NEXT: [[IV_1_NEXT]] = getelementptr inbounds ptr, ptr [[IV_1]], i64 1
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; CHECK-NEXT: [[CMP_I_I_NOT_I:%.*]] = icmp eq ptr [[IV_2_NEXT]], [[END]]
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; CHECK-NEXT: br i1 [[CMP_I_I_NOT_I]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
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; CHECK: exit:
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; CHECK-NEXT: [[RES_LCSSA:%.*]] = phi ptr [ [[IV_1]], [[LOOP]] ], [ [[IND_ESCAPE]], [[MIDDLE_BLOCK]] ]
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; CHECK-NEXT: ret ptr [[RES_LCSSA]]
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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.1 = phi ptr [ %start.1, %entry ], [ %iv.1.next, %loop ]
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%iv.2 = phi ptr [ %start.2, %entry ], [ %iv.2.next, %loop ]
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store i64 0, ptr %iv.2
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%iv.2.next = getelementptr inbounds ptr, ptr %iv.2, i64 1
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%iv.1.next = getelementptr inbounds ptr, ptr %iv.1, i64 1
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%cmp.i.i.not.i = icmp eq ptr %iv.2.next, %end
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br i1 %cmp.i.i.not.i, label %exit, label %loop
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exit:
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%res.lcssa = phi ptr [ %iv.1, %loop ]
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ret ptr %res.lcssa
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}
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