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; RUN: opt -S -O1 < %s | FileCheck %s
@a = common global i32 0, align 4
; @hook_me is weak, so GMR must not eliminate the reload of @a in @f,
; even though @hook_me doesn't mod or ref @a.
; Function Attrs: nounwind ssp uwtable
define weak i32 @hook_me() {
ret i32 0
}
; Function Attrs: nounwind ssp uwtable
define i32 @f() {
%1 = alloca i32, align 4
store i32 4, i32* @a, align 4
%2 = call i32 @hook_me()
; CHECK: load i32, i32* @a, align 4
%3 = load i32, i32* @a, align 4
%4 = add nsw i32 %3, %2
store i32 %4, i32* @a, align 4
%5 = load i32, i32* %1
ret i32 %5
}
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