llvm-project/polly/test/ScopInfo/zero_ext_of_truncate_2.ll

55 lines
1.8 KiB
LLVM

; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; void f(unsigned long *restrict I, unsigned *restrict A, unsigned N) {
; for (unsigned i = 0; i < N; i++) {
; unsigned V = *I;
; if (V < i)
; A[i]++;
; }
; }
;
; CHECK: Assumed Context:
; CHECK-NEXT: [N, tmp] -> { : }
; CHECK-NEXT: Invalid Context:
; CHECK-NEXT: [N, tmp] -> { : N > 0 and (tmp < 0 or tmp >= 2147483648) }
;
; CHECK: Domain :=
; CHECK-NEXT: [N, tmp] -> { Stmt_if_then[i0] : i0 > tmp and 0 <= i0 < N };
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i64* noalias %I, i32* noalias %A, i32 %N, i32 %M) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%lftr.wideiv = trunc i64 %indvars.iv to i32
%exitcond = icmp ne i32 %lftr.wideiv, %N
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%tmp = load i64, i64* %I, align 8
%conv = trunc i64 %tmp to i32
%tmp1 = zext i32 %conv to i64
%cmp1 = icmp ult i64 %tmp1, %indvars.iv
br i1 %cmp1, label %if.then, label %if.end
if.then: ; preds = %for.body
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp2 = load i32, i32* %arrayidx, align 4
%inc = add i32 %tmp2, 1
store i32 %inc, i32* %arrayidx, align 4
br label %if.end
if.end: ; preds = %if.then, %for.body
br label %for.inc
for.inc: ; preds = %if.end
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}