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