| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=i686-- | FileCheck %s |
| ; Bug in FindModifiedNodeSlot cause tmp14 load to become a zextload and shr 31 |
| ; is then optimized away. |
| @tree_code_type = external dso_local global [0 x i32] ; <[0 x i32]*> [#uses=1] |
| |
| define void @copy_if_shared_r() { |
| ; CHECK-LABEL: copy_if_shared_r: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: movl 0, %eax |
| ; CHECK-NEXT: movzbl %al, %ecx |
| ; CHECK-NEXT: movl tree_code_type(,%ecx,4), %ecx |
| ; CHECK-NEXT: decl %ecx |
| ; CHECK-NEXT: cmpl $2, %ecx |
| ; CHECK-NEXT: ja .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: # %cond_true |
| ; CHECK-NEXT: shrl $31, %eax |
| ; CHECK-NEXT: testb %al, %al |
| ; CHECK-NEXT: .LBB0_2: # %cond_true17 |
| ; CHECK-NEXT: retl |
| %tmp = load i32, i32* null ; <i32> [#uses=1] |
| %tmp56 = and i32 %tmp, 255 ; <i32> [#uses=1] |
| %gep.upgrd.1 = zext i32 %tmp56 to i64 ; <i64> [#uses=1] |
| %tmp8 = getelementptr [0 x i32], [0 x i32]* @tree_code_type, i32 0, i64 %gep.upgrd.1 ; <i32*> [#uses=1] |
| %tmp9 = load i32, i32* %tmp8 ; <i32> [#uses=1] |
| %tmp10 = add i32 %tmp9, -1 ; <i32> [#uses=1] |
| %tmp.upgrd.2 = icmp ugt i32 %tmp10, 2 ; <i1> [#uses=1] |
| %tmp14 = load i32, i32* null ; <i32> [#uses=1] |
| %tmp15 = lshr i32 %tmp14, 31 ; <i32> [#uses=1] |
| %tmp15.upgrd.3 = trunc i32 %tmp15 to i8 ; <i8> [#uses=1] |
| %tmp16 = icmp ne i8 %tmp15.upgrd.3, 0 ; <i1> [#uses=1] |
| br i1 %tmp.upgrd.2, label %cond_false25, label %cond_true |
| cond_true: ; preds = %0 |
| br i1 %tmp16, label %cond_true17, label %cond_false |
| cond_true17: ; preds = %cond_true |
| ret void |
| cond_false: ; preds = %cond_true |
| ret void |
| cond_false25: ; preds = %0 |
| ret void |
| } |
| |
