| ; REQUIRES: asserts |
| ; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefix=ASM |
| ; RUN: llc -debug -o /dev/null < %s -mtriple=x86_64-- 2>&1 | FileCheck %s --check-prefix=DBG |
| ; rdar://8168938 |
| |
| ; This testcase involves SCEV normalization with the exit value from |
| ; one loop involved with the increment value for an addrec on another |
| ; loop. The expression should be properly normalized and simplified, |
| ; and require only a single division. |
| |
| ; DBG-NOT: DISCARDING (NORMALIZATION ISN'T INVERTIBLE) |
| ; ASM: div |
| ; ASM-NOT: div |
| |
| %0 = type { ptr, ptr } |
| |
| @0 = private constant [13 x i8] c"Result: %lu\0A\00" ; <ptr> [#uses=1] |
| @1 = internal constant [5 x i8] c"Huh?\00" ; <ptr> [#uses=1] |
| |
| define i32 @main(i32 %arg, ptr nocapture %arg1) nounwind { |
| bb: |
| %tmp = alloca %0, align 8 ; <ptr> [#uses=11] |
| call void @llvm.memset.p0.i64(ptr align 8 %tmp, i8 0, i64 16, i1 false) nounwind |
| %tmp3 = getelementptr inbounds %0, ptr %tmp, i64 0, i32 0 ; <ptr> [#uses=3] |
| store ptr %tmp, ptr %tmp3 |
| %tmp4 = getelementptr inbounds %0, ptr %tmp, i64 0, i32 1 ; <ptr> [#uses=1] |
| store ptr %tmp, ptr %tmp4 |
| %tmp5 = call noalias ptr @_Znwm(i64 24) nounwind ; <ptr> [#uses=2] |
| %tmp6 = getelementptr inbounds i8, ptr %tmp5, i64 16 ; <ptr> [#uses=2] |
| %tmp7 = icmp eq ptr %tmp6, null ; <i1> [#uses=1] |
| br i1 %tmp7, label %bb10, label %bb8 |
| |
| bb8: ; preds = %bb |
| store i32 1, ptr %tmp6 |
| br label %bb10 |
| |
| bb10: ; preds = %bb8, %bb |
| call void @_ZNSt15_List_node_base4hookEPS_(ptr %tmp5, ptr %tmp) nounwind |
| %tmp12 = load ptr, ptr %tmp3 ; <ptr> [#uses=3] |
| %tmp13 = icmp eq ptr %tmp12, %tmp ; <i1> [#uses=1] |
| br i1 %tmp13, label %bb14, label %bb16 |
| |
| bb14: ; preds = %bb10 |
| %tmp15 = call i32 @puts(ptr @1) |
| br label %bb35 |
| |
| bb16: ; preds = %bb16, %bb10 |
| %tmp17 = phi i64 [ %tmp22, %bb16 ], [ 0, %bb10 ] ; <i64> [#uses=1] |
| %tmp18 = phi ptr [ %tmp20, %bb16 ], [ %tmp12, %bb10 ] ; <ptr> [#uses=1] |
| %tmp19 = getelementptr inbounds %0, ptr %tmp18, i64 0, i32 0 ; <ptr> [#uses=1] |
| %tmp20 = load ptr, ptr %tmp19 ; <ptr> [#uses=2] |
| %tmp21 = icmp eq ptr %tmp20, %tmp ; <i1> [#uses=1] |
| %tmp22 = add i64 %tmp17, 1 ; <i64> [#uses=2] |
| br i1 %tmp21, label %bb23, label %bb16 |
| |
| bb23: ; preds = %bb16 |
| %tmp24 = udiv i64 100, %tmp22 ; <i64> [#uses=1] |
| br label %bb25 |
| |
| bb25: ; preds = %bb25, %bb23 |
| %tmp26 = phi i64 [ %tmp31, %bb25 ], [ 0, %bb23 ] ; <i64> [#uses=1] |
| %tmp27 = phi ptr [ %tmp29, %bb25 ], [ %tmp12, %bb23 ] ; <ptr> [#uses=1] |
| %tmp28 = getelementptr inbounds %0, ptr %tmp27, i64 0, i32 0 ; <ptr> [#uses=1] |
| %tmp29 = load ptr, ptr %tmp28 ; <ptr> [#uses=2] |
| %tmp30 = icmp eq ptr %tmp29, %tmp ; <i1> [#uses=1] |
| %tmp31 = add i64 %tmp26, 1 ; <i64> [#uses=2] |
| br i1 %tmp30, label %bb32, label %bb25 |
| |
| bb32: ; preds = %bb25 |
| %tmp33 = mul i64 %tmp31, %tmp24 ; <i64> [#uses=1] |
| %tmp34 = call i32 (ptr, ...) @printf(ptr @0, i64 %tmp33) nounwind |
| br label %bb35 |
| |
| bb35: ; preds = %bb32, %bb14 |
| %tmp36 = load ptr, ptr %tmp3 ; <ptr> [#uses=2] |
| %tmp37 = icmp eq ptr %tmp36, %tmp ; <i1> [#uses=1] |
| br i1 %tmp37, label %bb44, label %bb38 |
| |
| bb38: ; preds = %bb38, %bb35 |
| %tmp39 = phi ptr [ %tmp41, %bb38 ], [ %tmp36, %bb35 ] ; <ptr> [#uses=2] |
| %tmp40 = getelementptr inbounds %0, ptr %tmp39, i64 0, i32 0 ; <ptr> [#uses=1] |
| %tmp41 = load ptr, ptr %tmp40 ; <ptr> [#uses=2] |
| call void @_ZdlPv(ptr %tmp39) nounwind |
| %tmp43 = icmp eq ptr %tmp41, %tmp ; <i1> [#uses=1] |
| br i1 %tmp43, label %bb44, label %bb38 |
| |
| bb44: ; preds = %bb38, %bb35 |
| ret i32 0 |
| } |
| |
| declare i32 @printf(ptr nocapture, ...) nounwind |
| |
| declare void @_ZNSt15_List_node_base4hookEPS_(ptr, ptr) |
| |
| declare noalias ptr @_Znwm(i64) |
| |
| declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind |
| |
| declare void @_ZdlPv(ptr) nounwind |
| |
| declare i32 @puts(ptr nocapture) nounwind |