derek.holloway
7502bf64a4
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35 lines
1.6 KiB
LLVM
35 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: %if x86-registered-target %{ opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux < %s | FileCheck %s %}
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; RUN: %if aarch64-registered-target %{ opt -S --passes=slp-vectorizer -mtriple=aarch64-unknown-linux < %s | FileCheck %s %}
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; SLP doesn't currently support sub reductions
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define i64 @reduction_sub(ptr %ptr) {
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; CHECK-LABEL: define i64 @reduction_sub(
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; CHECK-SAME: ptr [[PTR:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[LD0:%.*]] = load i64, ptr [[PTR]], align 8
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i64, ptr [[PTR]], i64 1
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; CHECK-NEXT: [[LD1:%.*]] = load i64, ptr [[GEP]], align 8
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; CHECK-NEXT: [[SUB_1:%.*]] = sub nuw nsw i64 [[LD0]], [[LD1]]
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; CHECK-NEXT: [[GEP_1:%.*]] = getelementptr inbounds i64, ptr [[PTR]], i64 2
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; CHECK-NEXT: [[LD2:%.*]] = load i64, ptr [[GEP_1]], align 8
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; CHECK-NEXT: [[SUB_2:%.*]] = sub nuw nsw i64 [[SUB_1]], [[LD2]]
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; CHECK-NEXT: [[GEP_2:%.*]] = getelementptr inbounds i64, ptr [[PTR]], i64 3
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; CHECK-NEXT: [[LD3:%.*]] = load i64, ptr [[GEP_2]], align 8
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; CHECK-NEXT: [[SUB_3:%.*]] = sub nuw nsw i64 [[SUB_2]], [[LD3]]
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; CHECK-NEXT: ret i64 [[SUB_3]]
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;
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entry:
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%ld0 = load i64, ptr %ptr
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%gep = getelementptr inbounds i64, ptr %ptr, i64 1
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%ld1 = load i64, ptr %gep
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%sub.1 = sub nuw nsw i64 %ld0, %ld1
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%gep.1 = getelementptr inbounds i64, ptr %ptr, i64 2
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%ld2 = load i64, ptr %gep.1
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%sub.2 = sub nuw nsw i64 %sub.1, %ld2
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%gep.2 = getelementptr inbounds i64, ptr %ptr, i64 3
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%ld3 = load i64, ptr %gep.2
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%sub.3 = sub nuw nsw i64 %sub.2, %ld3
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ret i64 %sub.3
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}
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