63 lines
2.3 KiB
LLVM
63 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=2 -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
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; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC
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; PR5596
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; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate
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; the result.
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; FIXME: Remove obsolete calls/instructions
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define i32 @main() noreturn nounwind {
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; TUNIT: Function Attrs: nofree norecurse noreturn nosync nounwind willreturn memory(none)
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; TUNIT-LABEL: define {{[^@]+}}@main
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; TUNIT-SAME: () #[[ATTR0:[0-9]+]] {
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; TUNIT-NEXT: entry:
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; TUNIT-NEXT: ret i32 123
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;
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; CGSCC: Function Attrs: nofree noreturn nosync nounwind willreturn memory(none)
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; CGSCC-LABEL: define {{[^@]+}}@main
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; CGSCC-SAME: () #[[ATTR0:[0-9]+]] {
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; CGSCC-NEXT: entry:
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; CGSCC-NEXT: [[CALL2:%.*]] = tail call noundef i32 @wwrite() #[[ATTR2:[0-9]+]]
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; CGSCC-NEXT: ret i32 [[CALL2]]
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;
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entry:
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%call2 = tail call i32 @wwrite(i64 0) nounwind
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ret i32 %call2
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}
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define internal i32 @wwrite(i64 %i) nounwind readnone {
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; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
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; CGSCC-LABEL: define {{[^@]+}}@wwrite
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; CGSCC-SAME: () #[[ATTR1:[0-9]+]] {
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; CGSCC-NEXT: entry:
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; CGSCC-NEXT: switch i64 0, label [[SW_DEFAULT:%.*]] [
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; CGSCC-NEXT: i64 3, label [[RETURN:%.*]]
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; CGSCC-NEXT: i64 10, label [[RETURN]]
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; CGSCC-NEXT: ]
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; CGSCC: sw.default:
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; CGSCC-NEXT: ret i32 123
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; CGSCC: return:
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; CGSCC-NEXT: unreachable
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;
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entry:
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switch i64 %i, label %sw.default [
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i64 3, label %return
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i64 10, label %return
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]
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sw.default:
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ret i32 123
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return:
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ret i32 0
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}
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;.
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; TUNIT: attributes #[[ATTR0]] = { nofree norecurse noreturn nosync nounwind willreturn memory(none) }
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;.
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; CGSCC: attributes #[[ATTR0]] = { nofree noreturn nosync nounwind willreturn memory(none) }
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; CGSCC: attributes #[[ATTR1]] = { nofree norecurse nosync nounwind willreturn memory(none) }
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; CGSCC: attributes #[[ATTR2]] = { nounwind willreturn }
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;.
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