b08369f7f2
The behaviour of this patch is not great, but it has some side-effects
that are required for OpenMPOpt to work. The problem is that when we use
`-mlink-builtin-bitcode` we only import used symbols from the runtime.
Then OpenMPOpt will insert calls to symbols that were not previously
included. This patch removed this implicit behaviour as these functions
were kept alive by the `noinline` simply because it kept calls to them
in the module. This caused regression in some tests that relied on some
OpenMPOpt passes without using LTO. Reverting for the LLVM15 release but
will try to fix it more correctly on main.
This reverts commit d61d72dae6.
Fixes #56752
100 lines
2.5 KiB
LLVM
100 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes
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; RUN: opt < %s -S -openmp-opt-cgscc | FileCheck %s
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; RUN: opt < %s -S -passes=openmp-opt-cgscc | FileCheck %s
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declare void @unknown()
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; __kmpc functions
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define void @__kmpc_noinline() noinline nounwind {
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; CHECK: Function Attrs: nounwind
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; CHECK-LABEL: @__kmpc_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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; omp_X functions
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define void @omp_noinline() noinline nounwind {
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; CHECK: Function Attrs: nounwind
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; CHECK-LABEL: @omp_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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; _OMP namespace
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define void @_ZN4_OMP_noinline() noinline nounwind {
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; CHECK: Function Attrs: nounwind
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; CHECK-LABEL: @_ZN4_OMP_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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; Negative tests:
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define void @__kmpc_noinline_optnone() noinline optnone nounwind {
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; CHECK: Function Attrs: noinline nounwind optnone
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; CHECK-LABEL: @__kmpc_noinline_optnone(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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define void @omp_noinline_optnone() noinline optnone nounwind {
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; CHECK: Function Attrs: noinline nounwind optnone
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; CHECK-LABEL: @omp_noinline_optnone(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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; _OMP namespace
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define void @_ZN4_OMP_noinline_optnone() noinline optnone nounwind {
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; CHECK: Function Attrs: noinline nounwind optnone
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; CHECK-LABEL: @_ZN4_OMP_noinline_optnone(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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define void @a___kmpc_noinline() noinline nounwind {
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; CHECK: Function Attrs: noinline nounwind
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; CHECK-LABEL: @a___kmpc_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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define void @a_omp_noinline() noinline nounwind {
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; CHECK: Function Attrs: noinline nounwind
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; CHECK-LABEL: @a_omp_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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define void @a__ZN4_OMP_noinline() noinline nounwind {
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; CHECK: Function Attrs: noinline nounwind
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; CHECK-LABEL: @a__ZN4_OMP_noinline(
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; CHECK-NEXT: call void @unknown()
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; CHECK-NEXT: ret void
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;
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call void @unknown()
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ret void
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}
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!llvm.module.flags = !{!0, !1}
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!0 = !{i32 7, !"openmp", i32 50}
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!1 = !{i32 7, !"openmp-device", i32 50}
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