1; RUN: opt %loadPolly -analyze -polly-scops \ 2; RUN: -polly-invariant-load-hoisting=true < %s | FileCheck %s 3; RUN: opt %loadPolly -S -polly-codegen -polly-overflow-tracking=never \ 4; RUN: -polly-invariant-load-hoisting=true < %s | FileCheck %s --check-prefix=IR 5; 6; As (p + q) can overflow we have to check that we load from 7; I[p + q] only if it does not. 8; 9; CHECK: Invariant Accesses: { 10; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0] 11; CHECK-NEXT: [N, p, q] -> { Stmt_for_body[i0] -> MemRef_I[p + q] }; 12; CHECK-NEXT: Execution Context: [N, p, q] -> { : N > 0 and -2147483648 - p <= q <= 2147483647 - p } 13; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0] 14; CHECK-NEXT: [N, p, q] -> { Stmt_for_body[i0] -> MemRef_tmp1[0] }; 15; CHECK-NEXT: Execution Context: [N, p, q] -> { : N > 0 } 16; CHECK-NEXT: } 17; 18; IR: polly.preload.merge: 19; IR-NEXT: %polly.preload.tmp1.merge = phi i32* [ %polly.access.I.load, %polly.preload.exec ], [ null, %polly.preload.cond ] 20; IR-NEXT: store i32* %polly.preload.tmp1.merge, i32** %tmp1.preload.s2a 21; IR-NEXT: %12 = sext i32 %N to i64 22; IR-NEXT: %13 = icmp sge i64 %12, 1 23; IR-NEXT: %14 = sext i32 %q to i64 24; IR-NEXT: %15 = sext i32 %p to i64 25; IR-NEXT: %16 = add nsw i64 %15, %14 26; IR-NEXT: %17 = icmp sle i64 %16, 2147483647 27; IR-NEXT: %18 = and i1 %13, %17 28; IR-NEXT: %19 = sext i32 %q to i64 29; IR-NEXT: %20 = sext i32 %p to i64 30; IR-NEXT: %21 = add nsw i64 %20, %19 31; IR-NEXT: %22 = icmp sge i64 %21, -2147483648 32; IR-NEXT: %23 = and i1 %18, %22 33; IR-NEXT: br label %polly.preload.cond1 34; 35; IR: polly.preload.cond1: 36; IR-NEXT: br i1 %23 37; 38; IR: polly.preload.exec3: 39; IR-NEXT: %polly.access.polly.preload.tmp1.merge = getelementptr i32, i32* %polly.preload.tmp1.merge, i64 0 40; IR-NEXT: %polly.access.polly.preload.tmp1.merge.load = load i32, i32* %polly.access.polly.preload.tmp1.merge, align 4 41; 42; void f(int **I, int *A, int N, int p, int q) { 43; for (int i = 0; i < N; i++) 44; A[i] = *(I[p + q]); 45; } 46; 47target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 48 49define void @f(i32** %I, i32* %A, i32 %N, i32 %p, i32 %q) { 50entry: 51 %tmp = sext i32 %N to i64 52 br label %for.cond 53 54for.cond: ; preds = %for.inc, %entry 55 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] 56 %cmp = icmp slt i64 %indvars.iv, %tmp 57 br i1 %cmp, label %for.body, label %for.end 58 59for.body: ; preds = %for.cond 60 %add = add i32 %p, %q 61 %idxprom = sext i32 %add to i64 62 %arrayidx = getelementptr inbounds i32*, i32** %I, i64 %idxprom 63 %tmp1 = load i32*, i32** %arrayidx, align 8 64 %tmp2 = load i32, i32* %tmp1, align 4 65 %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv 66 store i32 %tmp2, i32* %arrayidx2, align 4 67 br label %for.inc 68 69for.inc: ; preds = %for.body 70 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 71 br label %for.cond 72 73for.end: ; preds = %for.cond 74 ret void 75} 76