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; RUN: opt -S --passes=ipsccp,deadargelim --force-specialization < %s | FileCheck %s --check-prefix=NO-GLOBALS
; RUN: opt -S --passes=ipsccp,deadargelim --force-specialization --funcspec-on-address < %s | FileCheck %s --check-prefix=GLOBALS
@G = global [10 x i32] zeroinitializer, align 4
define internal i32 @f(ptr %p) noinline {
entry:
%0 = load i32, ptr %p, align 4
store i32 0, ptr %p, align 4
ret i32 %0
}
define internal i32 @g(i32 %x, i32 %y, ptr %p) noinline {
entry:
%cmp = icmp sgt i32 %x, %y
br i1 %cmp, label %if.then, label %if.else
if.then:
br label %if.end
if.else:
br label %if.end
if.end:
%x.addr.0 = phi i32 [ %x, %if.then ], [ 11, %if.else ]
%p.addr.0 = phi ptr [ @G, %if.then ], [ %p, %if.else ]
%call = call i32 @f(ptr %p.addr.0)
%add = add nsw i32 %call, %x.addr.0
ret i32 %add
}
define i32 @h0(ptr %p) {
entry:
%call = call i32 @g(i32 2, i32 1, ptr %p)
ret i32 %call
}
define i32 @h1() {
entry:
%call = call i32 @f(ptr @G)
ret i32 %call
}
define i32 @h2() {
entry:
%call = call i32 @f(ptr getelementptr inbounds (i32, ptr @G, i64 1))
ret i32 %call
}
; Check if specialisation on the address of a non-const global variable
; is not allowed, then it is not performed.
; NO-GLOBALS-LABEL: define internal i32 @g()
; NO-GLOBALS: call i32 @f(ptr @G)
; NO-GLOBALS-LABEL: define i32 @h0(ptr %p)
; NO-GLOBALS:call i32 @g()
; NO-GLOBALS-LABEL: define i32 @h1()
; NO-GLOBALS: call i32 @f(ptr @G)
; NO-GLOBALS-LABEL: define i32 @h2()
; NO-GLOBALS: call i32 @f(ptr getelementptr inbounds (i32, ptr @G, i64 1))
; Check if specialisation on the address of a non-const global variable
; is allowed, then it is performed where possible.
; GLOBALS-LABEL: define internal i32 @g()
; GLOBALS: call i32 @f.2()
; GLOBALS-LABEL: define i32 @h0(ptr %p)
; GLOBALS: call i32 @g()
; GLOBALS-LABEL: define i32 @h1()
; GLOBALS: call i32 @f.2()
; GLOBALS-LABEL: define i32 @h2()
; GLOBALS: call i32 @f.1()
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