forked from OSchip/llvm-project
54 lines
1.3 KiB
LLVM
54 lines
1.3 KiB
LLVM
; RUN: opt %loadPolly -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-simplify -analyze < %s | FileCheck -match-full-lines %s
|
|
;
|
|
; Remove a store that is overwritten by another store in the same statement.
|
|
; Check that this works even if one of the writes is a scalar MemoryKind.
|
|
;
|
|
; for (int j = 0; j < n; j += 1) {
|
|
; body:
|
|
; val = 21.0 + 21.0;
|
|
; A[1] = val;
|
|
;
|
|
; user:
|
|
; A[0] = val;
|
|
; }
|
|
;
|
|
define void @overwritten_implicit_and_explicit(i32 %n, double* noalias nonnull %A, double* noalias nonnull %C) {
|
|
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 %body, label %exit
|
|
|
|
body:
|
|
%val = fadd double 21.0, 21.0
|
|
store double %val, double* %A
|
|
br label %user
|
|
|
|
user:
|
|
store double %val, double* %C
|
|
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: Overwrites removed: 1
|
|
; CHECK: }
|
|
|
|
; CHECK: Stmt_body
|
|
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
|
|
; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_val[] };
|
|
; CHECK-NEXT: new: [n] -> { Stmt_body[i0] -> MemRef_A[0] };
|
|
; CHECK-NEXT: Stmt_user
|