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