1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=i686-- | FileCheck %s
3; Bug in FindModifiedNodeSlot cause tmp14 load to become a zextload and shr 31
4; is then optimized away.
5@tree_code_type = external dso_local global [0 x i32]		; <[0 x i32]*> [#uses=1]
6
7define void @copy_if_shared_r() {
8; CHECK-LABEL: copy_if_shared_r:
9; CHECK:       # %bb.0:
10; CHECK-NEXT:    movl 0, %eax
11; CHECK-NEXT:    movzbl %al, %ecx
12; CHECK-NEXT:    movl tree_code_type(,%ecx,4), %ecx
13; CHECK-NEXT:    decl %ecx
14; CHECK-NEXT:    cmpl $2, %ecx
15; CHECK-NEXT:    ja .LBB0_2
16; CHECK-NEXT:  # %bb.1: # %cond_true
17; CHECK-NEXT:    shrl $31, %eax
18; CHECK-NEXT:    testb %al, %al
19; CHECK-NEXT:  .LBB0_2: # %cond_true17
20; CHECK-NEXT:    retl
21	%tmp = load i32, i32* null		; <i32> [#uses=1]
22	%tmp56 = and i32 %tmp, 255		; <i32> [#uses=1]
23	%gep.upgrd.1 = zext i32 %tmp56 to i64		; <i64> [#uses=1]
24	%tmp8 = getelementptr [0 x i32], [0 x i32]* @tree_code_type, i32 0, i64 %gep.upgrd.1	; <i32*> [#uses=1]
25	%tmp9 = load i32, i32* %tmp8		; <i32> [#uses=1]
26	%tmp10 = add i32 %tmp9, -1		; <i32> [#uses=1]
27	%tmp.upgrd.2 = icmp ugt i32 %tmp10, 2		; <i1> [#uses=1]
28	%tmp14 = load i32, i32* null		; <i32> [#uses=1]
29	%tmp15 = lshr i32 %tmp14, 31		; <i32> [#uses=1]
30	%tmp15.upgrd.3 = trunc i32 %tmp15 to i8		; <i8> [#uses=1]
31	%tmp16 = icmp ne i8 %tmp15.upgrd.3, 0		; <i1> [#uses=1]
32	br i1 %tmp.upgrd.2, label %cond_false25, label %cond_true
33cond_true:		; preds = %0
34	br i1 %tmp16, label %cond_true17, label %cond_false
35cond_true17:		; preds = %cond_true
36	ret void
37cond_false:		; preds = %cond_true
38	ret void
39cond_false25:		; preds = %0
40	ret void
41}
42
43