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1; REQUIRES: asserts2 3; RUN: opt < %s -passes=loop-interchange -debug -disable-output 2>&1 | FileCheck %s4 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 48@a = dso_local global ptr null, align 89@b = dso_local global ptr null, align 810@c = dso_local global ptr null, align 811 12; Loop interchange should not run delinearization13; for one loop case and should bail out early.14 15; CHECK-NOT: Delinearizing16; 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 423 %i = alloca i32, align 424 store i32 0, ptr %retval, align 425 store i32 0, ptr %i, align 426 br label %for.cond27 28for.cond: ; preds = %for.inc, %entry29 %0 = load i32, ptr %i, align 430 %1 = load i32, ptr @N, align 431 %cmp = icmp ult i32 %0, %132 br i1 %cmp, label %for.body, label %for.cond.cleanup33 34for.cond.cleanup: ; preds = %for.cond35 br label %for.end36 37for.body: ; preds = %for.cond38 %2 = load ptr, ptr @b, align 839 %3 = load i32, ptr %i, align 440 %idxprom = zext i32 %3 to i6441 %arrayidx = getelementptr inbounds nuw i32, ptr %2, i64 %idxprom42 %4 = load i32, ptr %arrayidx, align 443 %5 = load ptr, ptr @c, align 844 %6 = load i32, ptr %i, align 445 %idxprom1 = zext i32 %6 to i6446 %arrayidx2 = getelementptr inbounds nuw i32, ptr %5, i64 %idxprom147 %7 = load i32, ptr %arrayidx2, align 448 %add = add nsw i32 %4, %749 %8 = load ptr, ptr @a, align 850 %9 = load i32, ptr %i, align 451 %idxprom3 = zext i32 %9 to i6452 %arrayidx4 = getelementptr inbounds nuw i32, ptr %8, i64 %idxprom353 store i32 %add, ptr %arrayidx4, align 454 br label %for.inc55 56for.inc: ; preds = %for.body57 %10 = load i32, ptr %i, align 458 %inc = add i32 %10, 159 store i32 %inc, ptr %i, align 460 br label %for.cond61 62for.end: ; preds = %for.cond.cleanup63 ret void64}65 66