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1; RUN: opt < %s -passes=instcombine -S | FileCheck %s2;3; Check that SimplifyLibCalls do not (crash or) emit a library call if user4; has made a function alias with the same name.5 6%struct._IO_FILE = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i64, i16, i8, [1 x i8], ptr, i64, ptr, ptr, ptr, ptr, i64, i32, [20 x i8] }7%struct._IO_marker = type { ptr, ptr, i32 }8 9@stderr = external global ptr, align 810@.str = private constant [8 x i8] c"crash!\0A\00", align 111 12@fwrite = alias i64 (ptr, i64, i64, ptr), ptr @__fwrite_alias13 14define i64 @__fwrite_alias(ptr %ptr, i64 %size, i64 %n, ptr %s) {15; CHECK-LABEL: @__fwrite_alias(16; CHECK-NEXT: entry:17; CHECK-NEXT: ret i64 018;19entry:20 %ptr.addr = alloca ptr, align 821 %size.addr = alloca i64, align 822 %n.addr = alloca i64, align 823 %s.addr = alloca ptr, align 824 store ptr %ptr, ptr %ptr.addr, align 825 store i64 %size, ptr %size.addr, align 826 store i64 %n, ptr %n.addr, align 827 store ptr %s, ptr %s.addr, align 828 ret i64 029}30 31define void @foo() {32; CHECK-LABEL: @foo(33; CHECK-NOT: call i64 @fwrite(34; CHECK: call {{.*}} @fprintf(35;36entry:37 %retval = alloca i32, align 438 store i32 0, ptr %retval, align 439 %0 = load ptr, ptr @stderr, align 840 %call = call i32 (ptr, ptr, ...) @fprintf(ptr %0, ptr @.str)41 ret void42}43 44declare i32 @fprintf(ptr, ptr, ...)45