88 lines
3.6 KiB
LLVM
88 lines
3.6 KiB
LLVM
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; RUN: opt -gvn %s -S | FileCheck %s
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; PR42605. Check phi-translate won't translate the value number of a call
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; to the value of another call with clobber in between.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@global = dso_local local_unnamed_addr global i32 0, align 4
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@.str = private unnamed_addr constant [8 x i8] c"%d, %d\0A\00", align 1
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; Function Attrs: nofree nounwind
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declare dso_local i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr
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; Function Attrs: noinline norecurse nounwind readonly uwtable
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define dso_local i32 @_Z3gooi(i32 %i) local_unnamed_addr #0 {
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entry:
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%t0 = load i32, i32* @global, align 4, !tbaa !2
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%add = add nsw i32 %t0, %i
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ret i32 %add
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}
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; Function Attrs: nofree nounwind uwtable
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define dso_local void @noclobber() local_unnamed_addr {
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entry:
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%call = tail call i32 @_Z3gooi(i32 2)
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%add = add nsw i32 %call, 5
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%cmp = icmp sgt i32 %add, 2
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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%call1 = tail call i32 @_Z3gooi(i32 3)
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%add2 = add nsw i32 %call1, 5
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br label %if.end
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; Check pre happens after phitranslate.
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; CHECK-LABEL: @noclobber
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; CHECK: %add4.pre-phi = phi i32 [ %add2, %if.then ], [ %add, %entry ]
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; CHECK: printf(i8* getelementptr inbounds {{.*}}, i32 %add4.pre-phi)
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if.end: ; preds = %if.then, %entry
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%i.0 = phi i32 [ 3, %if.then ], [ 2, %entry ]
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%global2.0 = phi i32 [ %add2, %if.then ], [ %add, %entry ]
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%call3 = tail call i32 @_Z3gooi(i32 %i.0)
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%add4 = add nsw i32 %call3, 5
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%call5 = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 %global2.0, i32 %add4)
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ret void
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}
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; Function Attrs: nofree nounwind uwtable
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define dso_local void @hasclobber() local_unnamed_addr {
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entry:
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%call = tail call i32 @_Z3gooi(i32 2)
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%add = add nsw i32 %call, 5
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%cmp = icmp sgt i32 %add, 2
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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%call1 = tail call i32 @_Z3gooi(i32 3)
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%add2 = add nsw i32 %call1, 5
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br label %if.end
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; Check no pre happens.
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; CHECK-LABEL: @hasclobber
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; CHECK: %call3 = tail call i32 @_Z3gooi(i32 %i.0)
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; CHECK-NEXT: %add4 = add nsw i32 %call3, 5
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; CHECK-NEXT: printf(i8* getelementptr inbounds ({{.*}}, i32 %global2.0, i32 %add4)
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if.end: ; preds = %if.then, %entry
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%i.0 = phi i32 [ 3, %if.then ], [ 2, %entry ]
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%global2.0 = phi i32 [ %add2, %if.then ], [ %add, %entry ]
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store i32 5, i32* @global, align 4, !tbaa !2
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%call3 = tail call i32 @_Z3gooi(i32 %i.0)
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%add4 = add nsw i32 %call3, 5
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%call5 = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 %global2.0, i32 %add4)
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ret void
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}
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attributes #0 = { noinline norecurse nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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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 10.0.0 (trunk 369798)"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"int", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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