derek.holloway
7502bf64a4
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56 lines
2.5 KiB
LLVM
56 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
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; RUN: opt -passes=loop-vectorize -force-vector-width=4 -pass-remarks-output=%t.yaml -S %s | FileCheck %s
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; RUN: FileCheck --input-file=%t.yaml --check-prefix=REMARKS %s
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; REMARKS: --- !Missed
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; REMARKS-NEXT: Pass: vplan
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; REMARKS-NEXT: Name: VectorizationMultiUseReductionPredicate
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; REMARKS-NEXT: Function: test_predicate_mismatch
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; REMARKS-NEXT: Args:
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; REMARKS-NEXT: - String: 'Multi-use reduction with predicate '
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; REMARKS-NEXT: - String: ule
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; REMARKS-NEXT: - String: ' incompatible with reduction kind'
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; REMARKS-NEXT: ...
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define i64 @test_predicate_mismatch(ptr %src, i64 %n) {
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; CHECK-LABEL: define i64 @test_predicate_mismatch(
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; CHECK-SAME: ptr [[SRC:%.*]], i64 [[N:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
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; CHECK-NEXT: [[MIN_IDX:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[MIN_IDX_NEXT:%.*]], %[[LOOP]] ]
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; CHECK-NEXT: [[MIN_VAL:%.*]] = phi i64 [ 100, %[[ENTRY]] ], [ [[MIN_VAL_NEXT:%.*]], %[[LOOP]] ]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i64, ptr [[SRC]], i64 [[IV]]
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; CHECK-NEXT: [[L:%.*]] = load i64, ptr [[GEP]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[L]], [[MIN_VAL]]
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; CHECK-NEXT: [[MIN_VAL_NEXT]] = tail call i64 @llvm.umin.i64(i64 [[MIN_VAL]], i64 [[L]])
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; CHECK-NEXT: [[MIN_IDX_NEXT]] = select i1 [[CMP]], i64 [[MIN_IDX]], i64 [[IV]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label %[[EXIT:.*]], label %[[LOOP]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: [[RES:%.*]] = phi i64 [ [[MIN_IDX_NEXT]], %[[LOOP]] ]
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; CHECK-NEXT: ret i64 [[RES]]
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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 [ 0, %entry ], [ %iv.next, %loop ]
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%min.idx = phi i64 [ 0, %entry ], [ %min.idx.next, %loop ]
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%min.val = phi i64 [ 100, %entry ], [ %min.val.next, %loop ]
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%gep = getelementptr i64, ptr %src, i64 %iv
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%l = load i64, ptr %gep
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%cmp = icmp ult i64 %l, %min.val
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%min.val.next = tail call i64 @llvm.umin.i64(i64 %min.val, i64 %l)
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%min.idx.next = select i1 %cmp, i64 %min.idx, i64 %iv
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%iv.next = add nuw nsw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %n
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br i1 %exitcond.not, label %exit, label %loop
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exit:
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%res = phi i64 [ %min.idx.next, %loop ]
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ret i64 %res
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}
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