derek.holloway
7502bf64a4
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79 lines
2.1 KiB
LLVM
79 lines
2.1 KiB
LLVM
; RUN: opt -S --passes=ipsccp,deadargelim --force-specialization < %s | FileCheck %s --check-prefix=NO-GLOBALS
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; RUN: opt -S --passes=ipsccp,deadargelim --force-specialization --funcspec-on-address < %s | FileCheck %s --check-prefix=GLOBALS
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@G = global [10 x i32] zeroinitializer, align 4
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define internal i32 @f(ptr %p) noinline {
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entry:
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%0 = load i32, ptr %p, align 4
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store i32 0, ptr %p, align 4
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ret i32 %0
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}
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define internal i32 @g(i32 %x, i32 %y, ptr %p) noinline {
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entry:
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%cmp = icmp sgt i32 %x, %y
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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br label %if.end
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if.else:
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br label %if.end
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if.end:
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%x.addr.0 = phi i32 [ %x, %if.then ], [ 11, %if.else ]
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%p.addr.0 = phi ptr [ @G, %if.then ], [ %p, %if.else ]
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%call = call i32 @f(ptr %p.addr.0)
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%add = add nsw i32 %call, %x.addr.0
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ret i32 %add
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}
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define i32 @h0(ptr %p) {
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entry:
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%call = call i32 @g(i32 2, i32 1, ptr %p)
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ret i32 %call
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}
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define i32 @h1() {
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entry:
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%call = call i32 @f(ptr @G)
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ret i32 %call
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}
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define i32 @h2() {
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entry:
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%call = call i32 @f(ptr getelementptr inbounds (i32, ptr @G, i64 1))
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ret i32 %call
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}
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; Check if specialisation on the address of a non-const global variable
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; is not allowed, then it is not performed.
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; NO-GLOBALS-LABEL: define internal range(i32 -2147483646, -2147483648) i32 @g()
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; NO-GLOBALS: call i32 @f(ptr @G)
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; NO-GLOBALS-LABEL: define range(i32 -2147483646, -2147483648) i32 @h0(ptr %p)
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; NO-GLOBALS:call i32 @g()
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; NO-GLOBALS-LABEL: define i32 @h1()
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; NO-GLOBALS: call i32 @f(ptr @G)
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; NO-GLOBALS-LABEL: define i32 @h2()
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; NO-GLOBALS: call i32 @f(ptr getelementptr inbounds (i32, ptr @G, i64 1))
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; Check if specialisation on the address of a non-const global variable
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; is allowed, then it is performed where possible.
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; GLOBALS-LABEL: define internal range(i32 -2147483646, -2147483648) i32 @g()
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; GLOBALS: call i32 @f.specialized.2()
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; GLOBALS-LABEL: define range(i32 -2147483646, -2147483648) i32 @h0(ptr %p)
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; GLOBALS: call i32 @g()
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; GLOBALS-LABEL: define i32 @h1()
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; GLOBALS: call i32 @f.specialized.2()
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; GLOBALS-LABEL: define i32 @h2()
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; GLOBALS: call i32 @f.specialized.1()
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