83 lines
2.9 KiB
LLVM
83 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes='print<access-info>' -disable-output 2>&1 < %s | FileCheck %s
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define void @test(ptr noalias %x, ptr noalias %y, ptr noalias %z) {
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; CHECK-LABEL: 'test'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unsafe indirect dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: IndirectUnsafe:
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; CHECK-NEXT: %load = load double, ptr %gep.sel, align 8 ->
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; CHECK-NEXT: store double %load, ptr %gep.sel2, align 8
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.y = getelementptr double, ptr %y, i64 -32
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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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%icmp = icmp ule i64 %iv, 32
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%sel = select i1 %icmp, ptr %x, ptr %gep.y
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%gep.sel = getelementptr inbounds double, ptr %sel, i64 %iv
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%load = load double, ptr %gep.sel, align 8
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%sel2 = select i1 %icmp, ptr %y, ptr %z
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%gep.sel2 = getelementptr inbounds double, ptr %sel2, i64 %iv
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store double %load, ptr %gep.sel2, align 8
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%iv.next = add nuw nsw i64 %iv, 1
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%exit.cond = icmp eq i64 %iv, 94
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br i1 %exit.cond, label %exit, label %loop
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exit:
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ret void
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}
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; Same as previous test, but with selects replaced by phis in the same block.
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define void @test_phi(ptr noalias %x, ptr noalias %y, ptr noalias %z) {
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; CHECK-LABEL: 'test_phi'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%gep.y = getelementptr double, ptr %y, i64 -32
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br label %loop
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loop:
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%iv = phi i64 [ %iv.next, %latch ], [ 0, %entry ]
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%icmp = icmp ule i64 %iv, 32
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br i1 %icmp, label %if, label %latch
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if:
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br label %latch
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latch:
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%sel = phi ptr [ %x, %if ], [ %gep.y, %loop ]
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%sel2 = phi ptr [ %y, %if ], [ %z, %loop ]
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%gep.sel = getelementptr inbounds double, ptr %sel, i64 %iv
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%load = load double, ptr %gep.sel, align 8
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%gep.sel2 = getelementptr inbounds double, ptr %sel2, i64 %iv
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store double %load, ptr %gep.sel2, align 8
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%iv.next = add nuw nsw i64 %iv, 1
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%exit.cond = icmp eq i64 %iv, 94
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br i1 %exit.cond, label %exit, label %loop
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exit:
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ret void
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}
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