07253bc8c0
Using https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34. The opaque pointer migration resolves the TODO on test_fence3: The transform now works as expected by dint of the bitcast no longer existing.
44 lines
1.1 KiB
LLVM
44 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes='loop-mssa(licm)' < %s | FileCheck %s
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@e = external dso_local global ptr, align 8
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define void @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP1:%.*]]
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; CHECK: loop1:
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; CHECK-NEXT: br label [[LOOP2:%.*]]
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; CHECK: loop2:
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; CHECK-NEXT: br i1 false, label [[LOOP2_LATCH:%.*]], label [[LOOP_LATCH:%.*]]
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; CHECK: loop2.latch:
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; CHECK-NEXT: br label [[LOOP2]]
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; CHECK: loop.latch:
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; CHECK-NEXT: br label [[LOOP1]]
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;
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entry:
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br label %loop1
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loop1:
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br label %loop2
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loop2:
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br i1 undef, label %loop2.latch, label %loop.latch
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loop2.latch:
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store i32 0, ptr null, align 4
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br label %loop2
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loop.latch:
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store ptr null, ptr @e, align 8, !tbaa !0
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%ptr = load ptr, ptr @e, align 8, !tbaa !0
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store i32 0, ptr %ptr, align 4, !tbaa !4
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br label %loop1
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}
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!0 = !{!1, !1, i64 0}
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!1 = !{!"any pointer", !2, i64 0}
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!2 = !{!"omnipotent char", !3, i64 0}
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!3 = !{!"Simple C/C++ TBAA"}
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!4 = !{!5, !5, i64 0}
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!5 = !{!"int", !2, i64 0}
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