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llvm-project/polly/test/Simplify/emptyaccessdomain.ll

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[Simplify] Remove partial write accesses with empty domain. If the access relation's domain is empty, the access will never be executed. We can just remove it. We only remove write accesses. Partial read accesses are not yet supported and instructions in the statement might require the llvm::Value holding the read's result to be defined. llvm-svn: 308830
2017-07-23 04:33:09 +08:00
; RUN: opt %loadPolly -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-simplify -analyze < %s | FileCheck %s -match-full-lines
;
; for (int j = 0; j < n; j += 1) {
; A[0] = 42.0;
; }
;
define void @emptyaccessdomain(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 %body, label %exit
body:
store double 42.0, 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 {
[Simplify] Fix typo in statistics output. NFC. llvm-svn: 309402
2017-07-29 00:57:51 +08:00
; CHECK: Accesses with empty domains removed: 1
[Simplify] Remove partial write accesses with empty domain. If the access relation's domain is empty, the access will never be executed. We can just remove it. We only remove write accesses. Partial read accesses are not yet supported and instructions in the statement might require the llvm::Value holding the read's result to be defined. llvm-svn: 308830
2017-07-23 04:33:09 +08:00
; CHECK: Stmts removed: 1
; CHECK: }
; CHECK: After accesses {
; CHECK-NEXT: }