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https://github.com/c64scene-ar/llvm-6502.git
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d57120551f
Before this patch we had @a = weak global ... but @b = alias weak ... The patch changes aliases to look more like global variables. Looking at some really old code suggests that the reason was that the old bison based parser had a reduction for alias linkages and another one for global variable linkages. Putting the alias first avoided the reduce/reduce conflict. The days of the old .ll parser are long gone. The new one parses just "linkage" and a later check is responsible for deciding if a linkage is valid in a given context. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214355 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.0 KiB
LLVM
44 lines
1.0 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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@llvm.used = appending global [1 x i8*] [i8* bitcast (i32* @foo1 to i8*)], section "llvm.metadata"
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@bar = global i32 0
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@foo1 = alias i32* @bar
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@foo2 = alias i32* @bar
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@foo3 = alias i32* @foo2
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@foo4 = unnamed_addr alias i32* @foo2
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; Make sure the verifier does not complain about references to a global
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; declaration from an initializer.
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@decl = external global i32
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@ptr = global i32* @decl
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@ptr_a = alias i32** @ptr
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%FunTy = type i32()
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define i32 @foo_f() {
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ret i32 0
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}
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@bar_f = weak_odr alias %FunTy* @foo_f
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@bar_ff = alias i32()* @bar_f
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@bar_i = internal alias i32* @bar
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@A = alias bitcast (i32* @bar to i64*)
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define i32 @test() {
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entry:
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%tmp = load i32* @foo1
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%tmp1 = load i32* @foo2
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%tmp0 = load i32* @bar_i
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%tmp2 = call i32 @foo_f()
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%tmp3 = add i32 %tmp, %tmp2
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%tmp4 = call %FunTy* @bar_f()
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%tmp5 = add i32 %tmp3, %tmp4
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%tmp6 = add i32 %tmp1, %tmp5
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%tmp7 = add i32 %tmp6, %tmp0
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ret i32 %tmp7
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}
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