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llvm-6502/test/Transforms/GlobalOpt/alias-used-address-space.ll

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Fix addrspacecast with metadata globals git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-02 19:53:49 +00:00
; RUN: opt -S -globalopt < %s | FileCheck %s
target datalayout = "p:32:32:32-p1:16:16:16"
@c = addrspace(1) global i8 42
@i = internal addrspace(1) global i8 42
; CHECK: @ia = internal addrspace(1) global i8 42
Use "weak alias" instead of "alias weak" 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
2014-07-30 22:51:54 +00:00
@ia = internal alias i8 addrspace(1)* @i
Fix addrspacecast with metadata globals git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-02 19:53:49 +00:00
@llvm.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(1)* @ca to i8*)], section "llvm.metadata"
; CHECK-DAG: @llvm.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(1)* @ca to i8*)], section "llvm.metadata"
@llvm.compiler.used = appending global [2 x i8*] [i8* addrspacecast(i8 addrspace(1)* @ia to i8*), i8* addrspacecast (i8 addrspace(1)* @i to i8*)], section "llvm.metadata"
; CHECK-DAG: @llvm.compiler.used = appending global [1 x i8*] [i8* addrspacecast (i8 addrspace(1)* @ia to i8*)], section "llvm.metadata"
@sameAsUsed = global [1 x i8*] [i8* addrspacecast(i8 addrspace(1)* @ca to i8*)]
; CHECK-DAG: @sameAsUsed = global [1 x i8*] [i8* addrspacecast (i8 addrspace(1)* @c to i8*)]
Use "weak alias" instead of "alias weak" 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
2014-07-30 22:51:54 +00:00
@ca = internal alias i8 addrspace(1)* @c
; CHECK: @ca = internal alias i8 addrspace(1)* @c
Fix addrspacecast with metadata globals git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-02 19:53:49 +00:00
define i8 addrspace(1)* @h() {
ret i8 addrspace(1)* @ca
}
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