1; RUN: opt -loop-reduce -S < %s | FileCheck %s 2; 3; PR11571: handle a postinc user outside of for.body7 that requires 4; recursive expansion of a quadratic recurrence within for.body7. LSR 5; needs to forget that for.body7 is a postinc loop during expansion. 6 7target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128" 8target triple = "i386-unknown-freebsd10.0" 9 10@b = external global [121 x i32] 11 12; CHECK-LABEL: @vb( 13; Outer recurrence: 14; CHECK: %lsr.iv1 = phi [121 x i32]* 15; Inner recurrence: 16; CHECK: %lsr.iv = phi i32 17; Outer step (relative to inner recurrence): 18; CHECK: %scevgep = getelementptr i1, i1* %{{.*}}, i32 %lsr.iv 19; Outer use: 20; CHECK: %lsr.iv3 = phi [121 x i32]* [ %lsr.iv1, %for.body43.preheader ] 21define void @vb() nounwind { 22for.cond.preheader: 23 br label %for.body7 24 25for.body7: 26 %indvars.iv77 = phi i32 [ %indvars.iv.next78, %for.body7 ], [ 1, %for.cond.preheader ] 27 %bf.072 = phi i32 [ %t1, %for.body7 ], [ 0, %for.cond.preheader ] 28 %t1 = add i32 %bf.072, %indvars.iv77 29 %indvars.iv.next78 = add i32 %indvars.iv77, 1 30 br i1 undef, label %for.body43, label %for.body7 31 32for.body43: 33 %bf.459 = phi i32 [ %inc44, %for.body43 ], [ %t1, %for.body7 ] 34 %inc44 = add nsw i32 %bf.459, 1 35 %arrayidx45 = getelementptr inbounds [121 x i32], [121 x i32]* @b, i32 0, i32 %bf.459 36 %t2 = load i32, i32* %arrayidx45, align 4 37 br label %for.body43 38} 39 40