45 lines
1.4 KiB
LLVM
45 lines
1.4 KiB
LLVM
; RUN: opt -passes=openmp-opt-cgscc -debug-only=openmp-opt -disable-output < %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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; ModuleID = 'single_threaded_exeuction.c'
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%struct.ident_t = type { i32, i32, i32, i32, i8* }
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@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
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@0 = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00", align 1
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@1 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @0, i32 0, i32 0) }, align 8
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; CHECK: [openmp-opt] Basic block @bar entry is executed by a single thread.
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; Function Attrs: noinline nounwind uwtable
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define internal void @bar() {
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entry:
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ret void
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}
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; CHECK-NOT: [openmp-opt] Basic block @foo entry is executed by a single thread.
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; CHECK: [openmp-opt] Basic block @foo if.then is executed by a single thread.
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; CHECK-NOT: [openmp-opt] Basic block @foo if.end is executed by a single thread.
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; Function Attrs: noinline nounwind uwtable
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define dso_local void @foo() {
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entry:
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%call = call i32 @omp_get_thread_num()
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%cmp = icmp eq i32 %call, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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call void @bar()
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br label %if.end
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if.end:
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ret void
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}
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declare dso_local i32 @omp_get_thread_num()
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{!"clang version 13.0.0"}
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!2 = !{!3}
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!3 = !{i64 2, i64 -1, i64 -1, i1 true}
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