1; REQUIRES: asserts 2 3; RUN: opt < %s -passes=loop-interchange -debug -disable-output 2>&1 | FileCheck %s 4 5target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32" 6 7@N = dso_local global i32 0, align 4 8@a = dso_local global ptr null, align 8 9@b = dso_local global ptr null, align 8 10@c = dso_local global ptr null, align 8 11 12; Loop interchange should not run delinearization 13; for one loop case and should bail out early. 14 15; CHECK-NOT: Delinearizing 16; CHECK-NOT: Strides: 17; CHECK-NOT: Terms: 18; CHECK: Unsupported depth of loop nest 1, the supported range is [2, 10]. 19 20define void @foo() { 21entry: 22 %retval = alloca i32, align 4 23 %i = alloca i32, align 4 24 store i32 0, ptr %retval, align 4 25 store i32 0, ptr %i, align 4 26 br label %for.cond 27 28for.cond: ; preds = %for.inc, %entry 29 %0 = load i32, ptr %i, align 4 30 %1 = load i32, ptr @N, align 4 31 %cmp = icmp ult i32 %0, %1 32 br i1 %cmp, label %for.body, label %for.cond.cleanup 33 34for.cond.cleanup: ; preds = %for.cond 35 br label %for.end 36 37for.body: ; preds = %for.cond 38 %2 = load ptr, ptr @b, align 8 39 %3 = load i32, ptr %i, align 4 40 %idxprom = zext i32 %3 to i64 41 %arrayidx = getelementptr inbounds nuw i32, ptr %2, i64 %idxprom 42 %4 = load i32, ptr %arrayidx, align 4 43 %5 = load ptr, ptr @c, align 8 44 %6 = load i32, ptr %i, align 4 45 %idxprom1 = zext i32 %6 to i64 46 %arrayidx2 = getelementptr inbounds nuw i32, ptr %5, i64 %idxprom1 47 %7 = load i32, ptr %arrayidx2, align 4 48 %add = add nsw i32 %4, %7 49 %8 = load ptr, ptr @a, align 8 50 %9 = load i32, ptr %i, align 4 51 %idxprom3 = zext i32 %9 to i64 52 %arrayidx4 = getelementptr inbounds nuw i32, ptr %8, i64 %idxprom3 53 store i32 %add, ptr %arrayidx4, align 4 54 br label %for.inc 55 56for.inc: ; preds = %for.body 57 %10 = load i32, ptr %i, align 4 58 %inc = add i32 %10, 1 59 store i32 %inc, ptr %i, align 4 60 br label %for.cond 61 62for.end: ; preds = %for.cond.cleanup 63 ret void 64} 65 66