llvm-6502/test/Transforms/LoopStrengthReduce/nonlinear-postinc.ll
Dan Gohman 069d6f3396 Non-affine post-inc SCEV expansions have more code which must be
emitted after the increment. Make sure the insert position
reflects this. This fixes PR6453.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97537 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 01:59:21 +00:00

45 lines
847 B
LLVM

; RUN: opt < %s -loop-reduce
; PR6453
target datalayout = "e-p:64:64:64"
define void @_ZNK15PolynomialSpaceILi3EE13compute_indexEjRA3_j() nounwind {
entry:
br label %bb6
bb6:
%t4 = phi i32 [ 0, %entry ], [ %t3, %bb5 ]
%t16 = sub i32 undef, %t4
%t25 = sub i32 undef, %t4
%t26 = add i32 undef, %t25
br label %bb4
bb4:
%t2 = phi i32 [ %t1, %bb3 ], [ 0, %bb6 ]
%t17 = mul i32 %t2, %t16
%t18 = zext i32 %t2 to i33
%t19 = add i32 %t2, -1
%t20 = zext i32 %t19 to i33
%t21 = mul i33 %t18, %t20
%t22 = lshr i33 %t21, 1
%t23 = trunc i33 %t22 to i32
%t24 = sub i32 %t17, %t23
%t27 = add i32 %t24, %t26
br i1 false, label %bb1, label %bb5
bb1:
%t = icmp ugt i32 %t27, undef
br i1 %t, label %bb2, label %bb3
bb3:
%t1 = add i32 %t2, 1
br label %bb4
bb5:
%t3 = add i32 %t4, 1
br label %bb6
bb2:
ret void
}