| ; RUN: opt < %s -instcombine -instcombine-infinite-loop-threshold=3 -S | FileCheck %s |
| |
| %struct.__va_list = type { i8*, i8*, i8*, i32, i32 } |
| |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) |
| declare void @llvm.va_start(i8*) |
| declare void @llvm.va_end(i8*) |
| declare void @llvm.va_copy(i8*, i8*) |
| |
| define i32 @func(i8* nocapture readnone %fmt, ...) { |
| ; CHECK-LABEL: @func( |
| ; CHECK: entry: |
| ; CHECK-NEXT: ret i32 0 |
| entry: |
| %va0 = alloca %struct.__va_list, align 8 |
| %va1 = alloca %struct.__va_list, align 8 |
| %0 = bitcast %struct.__va_list* %va0 to i8* |
| %1 = bitcast %struct.__va_list* %va1 to i8* |
| call void @llvm.lifetime.start.p0i8(i64 32, i8* %0) |
| call void @llvm.va_start(i8* %0) |
| call void @llvm.lifetime.start.p0i8(i64 32, i8* %1) |
| call void @llvm.va_copy(i8* %1, i8* %0) |
| call void @llvm.va_end(i8* %1) |
| call void @llvm.lifetime.end.p0i8(i64 32, i8* %1) |
| call void @llvm.va_end(i8* %0) |
| call void @llvm.lifetime.end.p0i8(i64 32, i8* %0) |
| ret i32 0 |
| } |
| |
