derek.holloway
7502bf64a4
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52 lines
1.5 KiB
LLVM
52 lines
1.5 KiB
LLVM
; RUN: llc -mtriple=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
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;
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; Source:
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; extern void foo(void) __attribute__((nomerge));
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;
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; void bar(long i) {
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; if (i)
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; foo();
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; else
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; foo();
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; }
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;
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; Compilation flag:
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; clang -target bpf -S -O2 -emit-llvm t.c -o t.ll
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; The goal of the test is to check that 'nomerge' attribute
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; preserves two calls to 'foo' from merging.
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; CHECK: call foo
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; CHECK: call foo
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; Function Attrs: nounwind
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define dso_local void @bar(i64 noundef %i) local_unnamed_addr #0 {
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entry:
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%tobool.not = icmp eq i64 %i, 0
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br i1 %tobool.not, label %if.else, label %if.then
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if.then: ; preds = %entry
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tail call void @foo() #2
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br label %if.end
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if.else: ; preds = %entry
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tail call void @foo() #2
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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declare dso_local void @foo() local_unnamed_addr #1
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attributes #0 = { nounwind "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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attributes #1 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
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attributes #2 = { nomerge nounwind }
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!llvm.module.flags = !{!0, !1}
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!llvm.ident = !{!2}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"frame-pointer", i32 2}
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!2 = !{!"clang version 17.0.0 (/home/eddy/work/llvm-project/clang bd66f4b1da304af8e5a890b3205ce6f3d76667ee)"}
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