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|
; RUN: opt -ipconstprop -S < %s | FileCheck %s
;
; #include <pthread.h>
;
; void *GlobalVPtr;
;
; static void *foo(void *arg) { return arg; }
; static void *bar(void *arg) { return arg; }
;
; int main() {
; pthread_t thread;
; pthread_create(&thread, NULL, foo, NULL);
; pthread_create(&thread, NULL, bar, &GlobalVPtr);
; return 0;
; }
;
; Verify the constant values NULL and &GlobalVPtr are propagated into foo and
; bar, respectively.
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
%union.pthread_attr_t = type { i64, [48 x i8] }
@GlobalVPtr = common dso_local global i8* null, align 8
define dso_local i32 @main() {
entry:
%thread = alloca i64, align 8
%call = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @foo, i8* null)
%call1 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @bar, i8* bitcast (i8** @GlobalVPtr to i8*))
ret i32 0
}
declare !callback !0 dso_local i32 @pthread_create(i64*, %union.pthread_attr_t*, i8* (i8*)*, i8*)
define internal i8* @foo(i8* %arg) {
entry:
; CHECK: ret i8* null
ret i8* %arg
}
define internal i8* @bar(i8* %arg) {
entry:
; CHECK: ret i8* bitcast (i8** @GlobalVPtr to i8*)
ret i8* %arg
}
!1 = !{i64 2, i64 3, i1 false}
!0 = !{!1}
|
