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Imported Upstream version 5.18.0.167
Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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; RUN: opt < %s -loop-reduce -S | grep phi | count 1
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; This should only result in one PHI node!
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; void foo(double *D, double *E, double F) {
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; while (D != E)
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; *D++ = F;
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; }
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define void @foo(double* %D, double* %E, double %F) nounwind {
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entry:
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%tmp.24 = icmp eq double* %D, %E ; <i1> [#uses=1]
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br i1 %tmp.24, label %return, label %no_exit
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no_exit: ; preds = %no_exit, %entry
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%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=2]
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%D_addr.0.0.rec = bitcast i32 %indvar to i32 ; <i32> [#uses=2]
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%D_addr.0.0 = getelementptr double, double* %D, i32 %D_addr.0.0.rec ; <double*> [#uses=1]
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%inc.rec = add i32 %D_addr.0.0.rec, 1 ; <i32> [#uses=1]
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%inc = getelementptr double, double* %D, i32 %inc.rec ; <double*> [#uses=1]
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store double %F, double* %D_addr.0.0
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%tmp.2 = icmp eq double* %inc, %E ; <i1> [#uses=1]
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%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
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br i1 %tmp.2, label %return, label %no_exit
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return: ; preds = %no_exit, %entry
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ret void
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}
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