1 ; RUN: llc < %s -march=x86 | grep shrl 2 ; Bug in FindModifiedNodeSlot cause tmp14 load to become a zextload and shr 31 3 ; is then optimized away. 4 @tree_code_type = external global [0 x i32] ; <[0 x i32]*> [#uses=1] 5 6 define void @copy_if_shared_r() { 7 %tmp = load i32, i32* null ; <i32> [#uses=1] 8 %tmp56 = and i32 %tmp, 255 ; <i32> [#uses=1] 9 %gep.upgrd.1 = zext i32 %tmp56 to i64 ; <i64> [#uses=1] 10 %tmp8 = getelementptr [0 x i32], [0 x i32]* @tree_code_type, i32 0, i64 %gep.upgrd.1 ; <i32*> [#uses=1] 11 %tmp9 = load i32, i32* %tmp8 ; <i32> [#uses=1] 12 %tmp10 = add i32 %tmp9, -1 ; <i32> [#uses=1] 13 %tmp.upgrd.2 = icmp ugt i32 %tmp10, 2 ; <i1> [#uses=1] 14 %tmp14 = load i32, i32* null ; <i32> [#uses=1] 15 %tmp15 = lshr i32 %tmp14, 31 ; <i32> [#uses=1] 16 %tmp15.upgrd.3 = trunc i32 %tmp15 to i8 ; <i8> [#uses=1] 17 %tmp16 = icmp ne i8 %tmp15.upgrd.3, 0 ; <i1> [#uses=1] 18 br i1 %tmp.upgrd.2, label %cond_false25, label %cond_true 19 cond_true: ; preds = %0 20 br i1 %tmp16, label %cond_true17, label %cond_false 21 cond_true17: ; preds = %cond_true 22 ret void 23 cond_false: ; preds = %cond_true 24 ret void 25 cond_false25: ; preds = %0 26 ret void 27 } 28 29
