1 // REQUIRES: powerpc-registered-target 2 // REQUIRES: asserts 3 // RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s 4 // RUN: %clang_cc1 -triple powerpc-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-PPC 5 // RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -emit-llvm -o - %s | FileCheck %s 6 7 #include <stdarg.h> 8 9 struct x { 10 long a; 11 double b; 12 }; 13 14 void testva (int n, ...) 15 { 16 va_list ap; 17 18 struct x t = va_arg (ap, struct x); 19 // CHECK: call void @llvm.memcpy 20 21 // CHECK-PPC: [[ARRAYDECAY:%.+]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %ap, i32 0, i32 0 22 // CHECK-PPC-NEXT: [[GPRPTR:%.+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 0 23 // CHECK-PPC-NEXT: [[GPR:%.+]] = load i8, ptr [[GPRPTR]], align 4 24 // CHECK-PPC-NEXT: [[COND:%.+]] = icmp ult i8 [[GPR]], 8 25 // CHECK-PPC-NEXT: br i1 [[COND]], label %[[USING_REGS:[a-z_0-9]+]], label %[[USING_OVERFLOW:[a-z_0-9]+]] 26 // 27 // CHECK-PPC:[[USING_REGS]] 28 // CHECK-PPC-NEXT: [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 4 29 // CHECK-PPC-NEXT: [[REGSAVE_AREA:%.+]] = load ptr, ptr [[REGSAVE_AREA_P]], align 4 30 // CHECK-PPC-NEXT: [[OFFSET:%.+]] = mul i8 [[GPR]], 4 31 // CHECK-PPC-NEXT: [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, ptr [[REGSAVE_AREA]], i8 [[OFFSET]] 32 // CHECK-PPC-NEXT: [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1 33 // CHECK-PPC-NEXT: store i8 [[USED_GPR]], ptr [[GPRPTR]], align 4 34 // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]] 35 // 36 // CHECK-PPC:[[USING_OVERFLOW]] 37 // CHECK-PPC-NEXT: store i8 8, ptr [[GPRPTR]], align 4 38 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 3 39 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load ptr, ptr [[OVERFLOW_AREA_P]], align 4 40 // CHECK-PPC-NEXT: [[GEP_ALIGN:%[0-9]+]] = getelementptr inbounds i8, ptr %argp.cur, i32 7 41 // CHECK-PPC-NEXT: %argp.cur.aligned = call ptr @llvm.ptrmask.p0.i32(ptr [[GEP_ALIGN]], i32 -8) 42 // CHECK-PPC-NEXT: [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, ptr %argp.cur.aligned, i32 4 43 // CHECK-PPC-NEXT: store ptr [[NEW_OVERFLOW_AREA:%[0-9]+]], ptr [[OVERFLOW_AREA_P]], align 4 44 // CHECK-PPC-NEXT: br label %[[CONT]] 45 // 46 // CHECK-PPC:[[CONT]] 47 // CHECK-PPC-NEXT: [[VAARG_ADDR:%[a-z.0-9]+]] = phi ptr [ [[RAW_REGADDR]], %[[USING_REGS]] ], [ %argp.cur.aligned, %[[USING_OVERFLOW]] ] 48 // CHECK-PPC-NEXT: [[AGGR:%[a-z0-9]+]] = load ptr, ptr [[VAARG_ADDR]] 49 // CHECK-PPC-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 %t, ptr align 8 [[AGGR]], i32 16, i1 false) 50 51 int v = va_arg (ap, int); 52 53 // CHECK: getelementptr inbounds i8, ptr %{{[a-z.0-9]*}}, i64 4 54 // CHECK-PPC: [[ARRAYDECAY:%[a-z0-9]+]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %ap, i32 0, i32 0 55 // CHECK-PPC-NEXT: [[GPRPTR:%.+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 0 56 // CHECK-PPC-NEXT: [[GPR:%.+]] = load i8, ptr [[GPRPTR]], align 4 57 // CHECK-PPC-NEXT: [[COND:%.+]] = icmp ult i8 [[GPR]], 8 58 // CHECK-PPC-NEXT: br i1 [[COND]], label %[[USING_REGS:.+]], label %[[USING_OVERFLOW:.+]]{{$}} 59 // 60 // CHECK-PPC:[[USING_REGS]] 61 // CHECK-PPC-NEXT: [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 4 62 // CHECK-PPC-NEXT: [[REGSAVE_AREA:%.+]] = load ptr, ptr [[REGSAVE_AREA_P]], align 4 63 // CHECK-PPC-NEXT: [[OFFSET:%.+]] = mul i8 [[GPR]], 4 64 // CHECK-PPC-NEXT: [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, ptr [[REGSAVE_AREA]], i8 [[OFFSET]] 65 // CHECK-PPC-NEXT: [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1 66 // CHECK-PPC-NEXT: store i8 [[USED_GPR]], ptr [[GPRPTR]], align 4 67 // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]] 68 // 69 // CHECK-PPC:[[USING_OVERFLOW]] 70 // CHECK-PPC-NEXT: store i8 8, ptr [[GPRPTR]], align 4 71 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds nuw %struct.__va_list_tag, ptr [[ARRAYDECAY]], i32 0, i32 3 72 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load ptr, ptr [[OVERFLOW_AREA_P]], align 4 73 // CHECK-PPC-NEXT: [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, ptr [[OVERFLOW_AREA]], i32 4 74 // CHECK-PPC-NEXT: store ptr [[NEW_OVERFLOW_AREA]], ptr [[OVERFLOW_AREA_P]] 75 // CHECK-PPC-NEXT: br label %[[CONT]] 76 // 77 // CHECK-PPC:[[CONT]] 78 // CHECK-PPC-NEXT: [[VAARG_ADDR:%[a-z.0-9]+]] = phi ptr [ [[RAW_REGADDR]], %[[USING_REGS]] ], [ [[OVERFLOW_AREA]], %[[USING_OVERFLOW]] ] 79 // CHECK-PPC-NEXT: [[THIRTYFIVE:%[0-9]+]] = load i32, ptr [[VAARG_ADDR]] 80 // CHECK-PPC-NEXT: store i32 [[THIRTYFIVE]], ptr %v, align 4 81 82 #ifdef __powerpc64__ 83 __int128_t u = va_arg (ap, __int128_t); 84 #endif 85 // CHECK: load i128, ptr %argp.cur3 86 } 87