forked from OSchip/llvm-project
55 lines
1.2 KiB
LLVM
55 lines
1.2 KiB
LLVM
|
; RUN: opt %loadPolly -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-simplify -analyze < %s | FileCheck %s -match-full-lines
|
||
|
|
;
|
||
|
|
; Do not remove redundant stores in the middle of region statements.
|
||
|
|
; The store in region_true could be removed, but in practice we do try to
|
||
|
|
; determine the relative ordering of block in region statements.
|
||
|
|
;
|
||
|
|
; for (int j = 0; j < n; j += 1) {
|
||
|
|
; double val = A[0];
|
||
|
|
; if (val == 0.0)
|
||
|
|
; A[0] = val;
|
||
|
|
; else
|
||
|
|
; A[0] = 0.0;
|
||
|
|
; }
|
||
|
|
;
|
||
|
|
define void @notredundant_region(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 %region_entry, label %exit
|
||
|
|
|
||
|
|
|
||
|
|
region_entry:
|
||
|
|
%val = load double, double* %A
|
||
|
|
%cmp = fcmp oeq double %val, 0.0
|
||
|
|
br i1 %cmp, label %region_true, label %region_false
|
||
|
|
|
||
|
|
region_true:
|
||
|
|
store double %val, double* %A
|
||
|
|
br label %region_exit
|
||
|
|
|
||
|
|
region_false:
|
||
|
|
store double 0.0, double* %A
|
||
|
|
br label %region_exit
|
||
|
|
|
||
|
|
region_exit:
|
||
|
|
br label %inc
|
||
|
|
|
||
|
|
|
||
|
|
inc:
|
||
|
|
%j.inc = add nuw nsw i32 %j, 1
|
||
|
|
br label %for
|
||
|
|
|
||
|
|
exit:
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
; CHECK: SCoP could not be simplified
|