| ; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s |
| ; |
| ; Check that we do not try to preload *I and assume p != 42. |
| ; |
| ; CHECK: Invariant Accesses: { |
| ; CHECK-NEXT: } |
| ; |
| ; CHECK: Invalid Context: |
| ; CHECK-NEXT: [N, p] -> { : false } |
| ; |
| ; CHECK: Stmt_if_then__TO__if_end |
| ; CHECK-NEXT: Domain := |
| ; CHECK-NEXT: [N, p] -> { Stmt_if_then__TO__if_end[i0] : p = 42 and 0 <= i0 < N }; |
| ; |
| ; void f(int *A, int *I, int N, int p, int q) { |
| ; for (int i = 0; i < N; i++) { |
| ; if (p == 42) { |
| ; *I = 0; |
| ; if (*I == q) |
| ; A[i] *= 2; |
| ; } |
| ; A[i]++; |
| ; } |
| ; } |
| ; |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @f(i32* %A, i32* %I, i32 %N, i32 %p, i32 %q) { |
| entry: |
| %tmp = sext i32 %N to i64 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] |
| %cmp = icmp slt i64 %indvars.iv, %tmp |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| %cmp1 = icmp eq i32 %p, 42 |
| br i1 %cmp1, label %if.then, label %if.end4 |
| |
| if.then: ; preds = %for.body |
| store i32 0, i32* %I, align 4 |
| %tmp1 = load i32, i32* %I, align 4 |
| %cmp2 = icmp eq i32 %tmp1, %q |
| br i1 %cmp2, label %if.then3, label %if.end |
| |
| if.then3: ; preds = %if.then |
| %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv |
| %tmp2 = load i32, i32* %arrayidx, align 4 |
| %mul = shl nsw i32 %tmp2, 1 |
| store i32 %mul, i32* %arrayidx, align 4 |
| br label %if.end |
| |
| if.end: ; preds = %if.then3, %if.then |
| br label %if.end4 |
| |
| if.end4: ; preds = %if.end, %for.body |
| %arrayidx6 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv |
| %tmp3 = load i32, i32* %arrayidx6, align 4 |
| %inc = add nsw i32 %tmp3, 1 |
| store i32 %inc, i32* %arrayidx6, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %if.end4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret void |
| } |