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| ; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; Verify we do not generate an empty invalid context only because the wrap
; in the second conditional will always happen if the block is executed.
;
; CHECK: Invalid Context:
; CHECK-NEXT: [N] -> { : N > 0 }
;
; void f(char *A, char N) {
; for (char i = 0; i < 10; i++) {
; if (N > 0)
; if (1 + 127 * N > 0)
; A[i] = 1;
; A[i] = 0;
; }
; }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(i8* %A, i8 signext %N) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i8 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%exitcond = icmp ne i8 %indvars.iv, 10
br i1 %exitcond, label %for.body, label %for.end
for.body: ; preds = %for.cond
%cmp3 = icmp sgt i8 %N, 0
br i1 %cmp3, label %if.then, label %if.end10
if.then: ; preds = %for.body
%mul = mul i8 %N, 127
%add = add i8 1, %mul
%cmp7 = icmp sgt i8 %add, 0
br i1 %cmp7, label %if.then9, label %if.end10
if.then9: ; preds = %if.end
%arrayidx = getelementptr inbounds i8, i8* %A, i8 %indvars.iv
store i8 1, i8* %arrayidx, align 1
br label %if.end10
if.end10: ; preds = %if.then9, %if.end
%arrayidx12 = getelementptr inbounds i8, i8* %A, i8 %indvars.iv
store i8 0, i8* %arrayidx12, align 1
br label %for.inc
for.inc: ; preds = %if.end10, %if.then
%indvars.iv.next = add nuw nsw i8 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
|