| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=tailcallelim -verify-dom-info -S | FileCheck %s |
| |
| ; the test was generated from the following C++ source: |
| ; |
| ; int zoo ( S p1 ); |
| ; |
| ; int foo ( int count, S p1 ) { |
| ; if ( count > 10 ) |
| ; return zoo(p1); |
| ; |
| ; // After TRE: temporarily variable created for passing byvalue parameter |
| ; // p1 could be used when zoo(p1) is called. |
| ; return foo(count+1, p1); |
| ; } |
| |
| ; this test checks that value of ByValue operand AGG_TMP_I of call site foo() |
| ; is copied into temporarily variable AGG_TMP_I1(byVal value holder) and |
| ; later the value from AGG_TMP_I1 is copied into function argument P1 before |
| ; new iteration started. |
| |
| %struct.S = type { i32, i32, float, %struct.B } |
| %struct.B = type { i32, float } |
| |
| ; Function Attrs: uwtable |
| define dso_local i32 @_Z3fooi1S(i32 %count, %struct.S* nocapture readonly byval(%struct.S) align 8 %p1) local_unnamed_addr #0 { |
| ; CHECK-LABEL: @_Z3fooi1S( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[AGG_TMP_I1:%.*]] = alloca [[STRUCT_S:%.*]], align 8 |
| ; CHECK-NEXT: [[AGG_TMP_I:%.*]] = alloca [[STRUCT_S]], align 8 |
| ; CHECK-NEXT: [[AGG_TMP14:%.*]] = alloca [[STRUCT_S]], align 8 |
| ; CHECK-NEXT: [[AGG_TMP:%.*]] = alloca [[STRUCT_S]], align 8 |
| ; CHECK-NEXT: [[AGG_TMP1:%.*]] = alloca [[STRUCT_S]], align 8 |
| ; CHECK-NEXT: br label [[TAILRECURSE:%.*]] |
| ; CHECK: tailrecurse: |
| ; CHECK-NEXT: [[COUNT_TR:%.*]] = phi i32 [ [[COUNT:%.*]], [[ENTRY:%.*]] ], [ [[ADD:%.*]], [[IF_END:%.*]] ] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[COUNT_TR]], 10 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: [[TMP0:%.*]] = bitcast %struct.S* [[AGG_TMP]] to i8* |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast %struct.S* [[P1:%.*]] to i8* |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) [[TMP0]], i8* nonnull align 8 dereferenceable(20) [[TMP1]], i64 20, i1 false) |
| ; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @_Z3zoo1S(%struct.S* nonnull byval(%struct.S) align 8 [[AGG_TMP]]) |
| ; CHECK-NEXT: br label [[RETURN:%.*]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[ADD]] = add nsw i32 [[COUNT_TR]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = bitcast %struct.S* [[AGG_TMP1]] to i8* |
| ; CHECK-NEXT: [[TMP3:%.*]] = bitcast %struct.S* [[P1]] to i8* |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) [[TMP2]], i8* nonnull align 8 dereferenceable(20) [[TMP3]], i64 20, i1 false) |
| ; CHECK-NEXT: [[AGG_TMP14_0__SROA_CAST:%.*]] = bitcast %struct.S* [[AGG_TMP14]] to i8* |
| ; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 20, i8* nonnull [[AGG_TMP14_0__SROA_CAST]]) |
| ; CHECK-NEXT: [[TMP4:%.*]] = bitcast %struct.S* [[AGG_TMP_I]] to i8* |
| ; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 20, i8* nonnull [[TMP4]]) |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) [[AGG_TMP14_0__SROA_CAST]], i8* nonnull align 8 dereferenceable(20) [[TMP2]], i64 20, i1 false) |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) [[TMP4]], i8* nonnull align 8 dereferenceable(20) [[AGG_TMP14_0__SROA_CAST]], i64 20, i1 false) |
| ; CHECK-NEXT: [[TMP5:%.*]] = bitcast %struct.S* [[AGG_TMP_I1]] to i8* |
| ; CHECK-NEXT: [[TMP6:%.*]] = bitcast %struct.S* [[AGG_TMP_I]] to i8* |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP5]], i8* align 8 [[TMP6]], i64 20, i1 false) |
| ; CHECK-NEXT: [[TMP7:%.*]] = bitcast %struct.S* [[P1]] to i8* |
| ; CHECK-NEXT: [[TMP8:%.*]] = bitcast %struct.S* [[AGG_TMP_I1]] to i8* |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP7]], i8* align 8 [[TMP8]], i64 20, i1 false) |
| ; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 20, i8* nonnull [[AGG_TMP14_0__SROA_CAST]]) |
| ; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 20, i8* nonnull [[TMP4]]) |
| ; CHECK-NEXT: br label [[TAILRECURSE]] |
| ; CHECK: return: |
| ; CHECK-NEXT: ret i32 [[CALL]] |
| ; |
| entry: |
| %agg.tmp.i = alloca %struct.S, align 8 |
| %agg.tmp14 = alloca %struct.S, align 8 |
| %agg.tmp = alloca %struct.S, align 8 |
| %agg.tmp1 = alloca %struct.S, align 8 |
| %cmp = icmp sgt i32 %count, 10 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| %0 = bitcast %struct.S* %agg.tmp to i8* |
| %1 = bitcast %struct.S* %p1 to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) %0, i8* nonnull align 8 dereferenceable(20) %1, i64 20, i1 false) |
| %call = call i32 @_Z3zoo1S(%struct.S* nonnull byval(%struct.S) align 8 %agg.tmp) |
| br label %return |
| |
| if.end: ; preds = %entry |
| %add = add nsw i32 %count, 1 |
| %2 = bitcast %struct.S* %agg.tmp1 to i8* |
| %3 = bitcast %struct.S* %p1 to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) %2, i8* nonnull align 8 dereferenceable(20) %3, i64 20, i1 false) |
| %agg.tmp14.0..sroa_cast = bitcast %struct.S* %agg.tmp14 to i8* |
| call void @llvm.lifetime.start.p0i8(i64 20, i8* nonnull %agg.tmp14.0..sroa_cast) |
| %4 = bitcast %struct.S* %agg.tmp.i to i8* |
| call void @llvm.lifetime.start.p0i8(i64 20, i8* nonnull %4) |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) %agg.tmp14.0..sroa_cast, i8* nonnull align 8 dereferenceable(20) %2, i64 20, i1 false) |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 dereferenceable(20) %4, i8* nonnull align 8 dereferenceable(20) %agg.tmp14.0..sroa_cast, i64 20, i1 false) |
| %call.i = call i32 @_Z3fooi1S(i32 %add, %struct.S* nonnull byval(%struct.S) align 8 %agg.tmp.i) |
| call void @llvm.lifetime.end.p0i8(i64 20, i8* nonnull %agg.tmp14.0..sroa_cast) |
| call void @llvm.lifetime.end.p0i8(i64 20, i8* nonnull %4) |
| br label %return |
| |
| return: ; preds = %if.end, %if.then |
| %retval.0 = phi i32 [ %call, %if.then ], [ %call.i, %if.end ] |
| ret i32 %retval.0 |
| } |
| |
| declare dso_local i32 @_Z3zoo1S(%struct.S* byval(%struct.S) align 8) local_unnamed_addr #1 |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #2 |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #2 |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #2 |
| |
| attributes #0 = { uwtable } |
| attributes #1 = { uwtable } |
| attributes #2 = { argmemonly nounwind willreturn } |