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1; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck %s2; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S -passes=msan 2>&1 | FileCheck %s "--check-prefixes=CHECK,CHECK-ORIGIN"3; RUN: opt < %s -msan-check-access-address=0 -S -passes="msan<track-origins=1>" 2>&1 | FileCheck %s "--check-prefixes=CHECK,CHECK-ORIGIN"4; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S -passes=msan 2>&1 | FileCheck %s "--check-prefixes=CHECK,CHECK-ORIGIN"5 6; Test that shadow and origin are stored for variadic function params.7 8target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"9target triple = "x86_64-unknown-linux-gnu"10 11%struct.__va_list_tag = type { i32, i32, ptr, ptr }12 13define dso_local i32 @test(i32 %a, i32 %b, i32 %c) local_unnamed_addr {14entry:15 %call = tail call i32 (i32, ...) @sum(i32 3, i32 %a, i32 %b, i32 %c)16 ret i32 %call17}18 19; CHECK: store i32 0, {{.*}} @__msan_param_tls, i64 820; CHECK: store i32 0, {{.*}} @__msan_param_tls, i64 1621; CHECK: store i32 0, {{.*}} @__msan_param_tls, i64 2422; CHECK: store i32 0, {{.*}} @__msan_va_arg_tls, i64 823; CHECK-ORIGIN: store i32 0, {{.*}} @__msan_va_arg_origin_tls, i64 824; CHECK: store i32 0, {{.*}} @__msan_va_arg_tls, i64 1625; CHECK-ORIGIN: store i32 0, {{.*}} @__msan_va_arg_origin_tls, i64 1626; CHECK: store i32 0, {{.*}} @__msan_va_arg_tls, i64 2427; CHECK-ORIGIN: store i32 0, {{.*}} @__msan_va_arg_origin_tls, i64 2428 29define dso_local i32 @sum(i32 %n, ...) local_unnamed_addr #0 {30entry:31 %args = alloca [1 x %struct.__va_list_tag], align 1632 call void @llvm.lifetime.start.p0(ptr nonnull %args) #233 call void @llvm.va_start(ptr nonnull %args)34 %cmp9 = icmp sgt i32 %n, 035 br i1 %cmp9, label %for.body.lr.ph, label %for.end36 37; CHECK: call void @llvm.memcpy.{{.*}} [[SHADOW_COPY:%[_0-9a-z]+]], {{.*}} @__msan_va_arg_tls38; CHECK-ORIGIN: call void @llvm.memcpy{{.*}} [[ORIGIN_COPY:%[_0-9a-z]+]], {{.*}} @__msan_va_arg_origin_tls39 40; CHECK: call void @llvm.va_start41; CHECK: call void @llvm.memcpy.{{.*}}, {{.*}} [[SHADOW_COPY]], i{{.*}} [[REGSAVE:[0-9]+]]42; CHECK-ORIGIN: call void @llvm.memcpy.{{.*}}, {{.*}} [[ORIGIN_COPY]], i{{.*}} [[REGSAVE]]43 44; CHECK: [[OVERFLOW_SHADOW:%[_0-9a-z]+]] = getelementptr i8, ptr [[SHADOW_COPY]], i{{.*}} [[REGSAVE]]45; CHECK: call void @llvm.memcpy.{{.*}}[[OVERFLOW_SHADOW]]46; CHECK-ORIGIN: [[OVERFLOW_ORIGIN:%[_0-9a-z]+]] = getelementptr i8, ptr [[ORIGIN_COPY]], i{{.*}} [[REGSAVE]]47; CHECK-ORIGIN: call void @llvm.memcpy.{{.*}}[[OVERFLOW_ORIGIN]]48 49for.body.lr.ph: ; preds = %entry50 %0 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %args, i64 0, i64 0, i32 351 %overflow_arg_area_p = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %args, i64 0, i64 0, i32 252 %gp_offset.pre = load i32, ptr %args, align 1653 br label %for.body54 55for.body: ; preds = %vaarg.end, %for.body.lr.ph56 %gp_offset = phi i32 [ %gp_offset.pre, %for.body.lr.ph ], [ %gp_offset12, %vaarg.end ]57 %sum.011 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %vaarg.end ]58 %i.010 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %vaarg.end ]59 %fits_in_gp = icmp ult i32 %gp_offset, 4160 br i1 %fits_in_gp, label %vaarg.in_reg, label %vaarg.in_mem61 62vaarg.in_reg: ; preds = %for.body63 %reg_save_area = load ptr, ptr %0, align 1664 %1 = sext i32 %gp_offset to i6465 %2 = getelementptr i8, ptr %reg_save_area, i64 %166 %3 = add i32 %gp_offset, 867 store i32 %3, ptr %args, align 1668 br label %vaarg.end69 70vaarg.in_mem: ; preds = %for.body71 %overflow_arg_area = load ptr, ptr %overflow_arg_area_p, align 872 %overflow_arg_area.next = getelementptr i8, ptr %overflow_arg_area, i64 873 store ptr %overflow_arg_area.next, ptr %overflow_arg_area_p, align 874 br label %vaarg.end75 76vaarg.end: ; preds = %vaarg.in_mem, %vaarg.in_reg77 %gp_offset12 = phi i32 [ %3, %vaarg.in_reg ], [ %gp_offset, %vaarg.in_mem ]78 %vaarg.addr.in = phi ptr [ %2, %vaarg.in_reg ], [ %overflow_arg_area, %vaarg.in_mem ]79 %4 = load i32, ptr %vaarg.addr.in, align 480 %add = add nsw i32 %4, %sum.01181 %inc = add nuw nsw i32 %i.010, 182 %exitcond = icmp eq i32 %inc, %n83 br i1 %exitcond, label %for.end, label %for.body84 85for.end: ; preds = %vaarg.end, %entry86 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %vaarg.end ]87 call void @llvm.va_end(ptr nonnull %args)88 call void @llvm.lifetime.end.p0(ptr nonnull %args) #289 ret i32 %sum.0.lcssa90}91 92 93; Function Attrs: argmemonly nounwind94declare void @llvm.lifetime.start.p0(ptr nocapture) #195 96; Function Attrs: nounwind97declare void @llvm.va_start(ptr) #298 99; Function Attrs: nounwind100declare void @llvm.va_end(ptr) #2101 102; Function Attrs: argmemonly nounwind103declare void @llvm.lifetime.end.p0(ptr nocapture) #1104 105declare dso_local i80 @sum_i80(i32, ...) local_unnamed_addr106 107; Unaligned types like i80 should also work.108define dso_local i80 @test_i80(i80 %a, i80 %b, i80 %c) local_unnamed_addr {109entry:110 %call = tail call i80 (i32, ...) @sum_i80(i32 3, i80 %a, i80 %b, i80 %c)111 ret i80 %call112}113 114