| 123456789101112131415161718192021222324252627282930313233343536373839 |
- ; RUN: opt -loop-reduce -S < %s | FileCheck %s
- ;
- ; PR11571: handle a postinc user outside of for.body7 that requires
- ; recursive expansion of a quadratic recurrence within for.body7. LSR
- ; needs to forget that for.body7 is a postinc loop during expansion.
- target 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"
- target triple = "i386-unknown-freebsd10.0"
- @b = external global [121 x i32]
- ; CHECK-LABEL: @vb(
- ; Outer recurrence:
- ; CHECK: %lsr.iv1 = phi [121 x i32]*
- ; Inner recurrence:
- ; CHECK: %lsr.iv = phi i32
- ; Outer step (relative to inner recurrence):
- ; CHECK: %scevgep = getelementptr i1, i1* %{{.*}}, i32 %lsr.iv
- ; Outer use:
- ; CHECK: %lsr.iv3 = phi [121 x i32]* [ %lsr.iv1, %for.body43.preheader ]
- define void @vb() nounwind {
- for.cond.preheader:
- br label %for.body7
- for.body7:
- %indvars.iv77 = phi i32 [ %indvars.iv.next78, %for.body7 ], [ 1, %for.cond.preheader ]
- %bf.072 = phi i32 [ %t1, %for.body7 ], [ 0, %for.cond.preheader ]
- %t1 = add i32 %bf.072, %indvars.iv77
- %indvars.iv.next78 = add i32 %indvars.iv77, 1
- br i1 undef, label %for.body43, label %for.body7
- for.body43:
- %bf.459 = phi i32 [ %inc44, %for.body43 ], [ %t1, %for.body7 ]
- %inc44 = add nsw i32 %bf.459, 1
- %arrayidx45 = getelementptr inbounds [121 x i32], [121 x i32]* @b, i32 0, i32 %bf.459
- %t2 = load i32, i32* %arrayidx45, align 4
- br label %for.body43
- }
|
