forked from OSchip/llvm-project
61 lines
2.7 KiB
LLVM
61 lines
2.7 KiB
LLVM
; RUN: opt %loadPolly -polly-detect -polly-codegen -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
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;
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; This crashed at some point as the pointer returned by the call
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; to @__errno_location is invariant and defined in the SCoP but not
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; loaded. Therefore it is not hoisted and consequently not available
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; at the beginning of the SCoP where we would need it if we would try
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; to hoist %tmp. We don't try to hoist %tmp anymore but this test still
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; checks that this passes to code generation and produces valid code.
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;
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; This SCoP is currently rejected because %call9 is not considered a valid
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; base pointer.
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;
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; CHECK-NOT: Valid Region for Scop
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: nounwind uwtable
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define void @fileblobSetFilename() #0 {
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entry:
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br i1 undef, label %if.end, label %cleanup
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if.end: ; preds = %entry
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br i1 undef, label %land.lhs.true, label %if.end.18
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land.lhs.true: ; preds = %if.end
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%call9 = tail call i32* @__errno_location() #2
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%tmp = load i32, i32* %call9, align 4, !tbaa !1
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br i1 false, label %if.then.12, label %if.end.18
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if.then.12: ; preds = %land.lhs.true
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br label %if.end.18
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if.end.18: ; preds = %if.then.12, %land.lhs.true, %if.end
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%fd.0 = phi i32 [ undef, %if.then.12 ], [ undef, %land.lhs.true ], [ undef, %if.end ]
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br i1 undef, label %if.then.21, label %if.end.27
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if.then.21: ; preds = %if.end.18
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unreachable
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if.end.27: ; preds = %if.end.18
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br label %cleanup
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cleanup: ; preds = %if.end.27, %entry
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ret void
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}
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; Function Attrs: nounwind readnone
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declare i32* @__errno_location() #1
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attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.8.0 (trunk 250010) (llvm/trunk 250018)"}
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!1 = !{!2, !2, i64 0}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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