redundant_scalarwrite.ll
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; RUN: opt %loadPolly -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-simplify -analyze < %s | FileCheck %s -match-full-lines
;
; Remove redundant scalar stores.
;
; for (int j = 0; j < n; j += 1) {
; bodyA:
; double val = A[0];
;
; bodyB:
; A[0] = val;
; }
;
define void @redundant_scalarwrite(i32 %n, double* noalias nonnull %A) {
entry:
br label %for
for:
%j = phi i32 [0, %entry], [%j.inc, %inc]
%j.cmp = icmp slt i32 %j, %n
br i1 %j.cmp, label %bodyA, label %exit
bodyA:
%val = load double, double* %A
br label %bodyB
bodyB:
store double %val, double* %A
br label %inc
inc:
%j.inc = add nuw nsw i32 %j, 1
br label %for
exit:
br label %return
return:
ret void
}
; CHECK: Statistics {
; CHECK: Redundant writes removed: 2
; CHECK: }
; CHECK: After accesses {
; CHECK-NEXT: }