344930316f
Clean up unused triple/datalayout lines, strengthen RUN lines to include -verify-loop-info/-verify-dom-info, and regenerate tests with UpdateTestChecks where appropriate.
79 lines
3.1 KiB
LLVM
79 lines
3.1 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-distribute -enable-loop-distribute -verify-loop-info -verify-dom-info -S < %s | FileCheck %s
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; If we can't find the bounds for one of the arrays in order to generate the
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; memchecks (e.g., C[i * i] below), loop shold not get distributed.
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;
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; for (i = 0; i < n; i++) {
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; A[i + 1] = A[i] * 3;
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; -------------------------------
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; C[i * i] = B[i] * 2;
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; }
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; Verify that we didn't distribute by checking that we still have the original
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; number of branches.
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@A = common global ptr null, align 8
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@B = common global ptr null, align 8
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@C = common global ptr null, align 8
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define void @f() {
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; CHECK-LABEL: define void @f() {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[A:%.*]] = load ptr, ptr @A, align 8
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; CHECK-NEXT: [[B:%.*]] = load ptr, ptr @B, align 8
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; CHECK-NEXT: [[C:%.*]] = load ptr, ptr @C, align 8
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; CHECK-NEXT: br label %[[FOR_BODY:.*]]
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; CHECK: [[FOR_BODY]]:
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; CHECK-NEXT: [[IND:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDXA:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[IND]]
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; CHECK-NEXT: [[LOADA:%.*]] = load i32, ptr [[ARRAYIDXA]], align 4
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; CHECK-NEXT: [[MULA:%.*]] = mul i32 [[LOADA]], 3
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; CHECK-NEXT: [[ADD]] = add nuw nsw i64 [[IND]], 1
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; CHECK-NEXT: [[ARRAYIDXA_PLUS_4:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[ADD]]
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; CHECK-NEXT: store i32 [[MULA]], ptr [[ARRAYIDXA_PLUS_4]], align 4
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; CHECK-NEXT: [[ARRAYIDXB:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[IND]]
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; CHECK-NEXT: [[LOADB:%.*]] = load i32, ptr [[ARRAYIDXB]], align 4
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; CHECK-NEXT: [[MULC:%.*]] = mul i32 [[LOADB]], 2
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; CHECK-NEXT: [[IND_2:%.*]] = mul i64 [[IND]], [[IND]]
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; CHECK-NEXT: [[ARRAYIDXC:%.*]] = getelementptr inbounds i32, ptr [[C]], i64 [[IND_2]]
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; CHECK-NEXT: store i32 [[MULC]], ptr [[ARRAYIDXC]], align 4
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[ADD]], 20
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; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END:.*]], label %[[FOR_BODY]]
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; CHECK: [[FOR_END]]:
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; CHECK-NEXT: ret void
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;
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entry:
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%a = load ptr, ptr @A, align 8
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%b = load ptr, ptr @B, align 8
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%c = load ptr, ptr @C, align 8
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
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%arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind
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%loadA = load i32, ptr %arrayidxA, align 4
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%mulA = mul i32 %loadA, 3
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%add = add nuw nsw i64 %ind, 1
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%arrayidxA_plus_4 = getelementptr inbounds i32, ptr %a, i64 %add
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store i32 %mulA, ptr %arrayidxA_plus_4, align 4
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%arrayidxB = getelementptr inbounds i32, ptr %b, i64 %ind
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%loadB = load i32, ptr %arrayidxB, align 4
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%mulC = mul i32 %loadB, 2
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%ind_2 = mul i64 %ind, %ind
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%arrayidxC = getelementptr inbounds i32, ptr %c, i64 %ind_2
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store i32 %mulC, ptr %arrayidxC, align 4
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%exitcond = icmp eq i64 %add, 20
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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