123 lines
4.6 KiB
LLVM
123 lines
4.6 KiB
LLVM
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; RUN: llc -mtriple=i386-apple-darwin %s -o %t
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; RUN: FileCheck %s < %t
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; RUN: FileCheck %s -check-prefix=GOT-EQUIV < %t
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; GOT equivalent globals references can be replaced by the GOT entry of the
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; final symbol instead.
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%struct.data = type { i32, %struct.anon }
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%struct.anon = type { i32, i32 }
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; Check that these got equivalent symbols are never emitted or used
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; GOT-EQUIV-NOT: _localgotequiv
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; GOT-EQUIV-NOT: _extgotequiv
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@localfoo = global i32 42
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@localgotequiv = private unnamed_addr constant i32* @localfoo
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@extfoo = external global i32
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@extgotequiv = private unnamed_addr constant i32* @extfoo
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; Don't replace GOT equivalent usage within instructions and emit the GOT
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; equivalent since it can't be replaced by the GOT entry. @bargotequiv is
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; used by an instruction inside @t0.
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;
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; CHECK: l_bargotequiv:
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; CHECK-NEXT: .long _extbar
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@extbar = external global i32
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@bargotequiv = private unnamed_addr constant i32* @extbar
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@table = global [4 x %struct.data] [
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; CHECK-LABEL: _table
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%struct.data { i32 1, %struct.anon { i32 2, i32 3 } },
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; Test GOT equivalent usage inside nested constant arrays.
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; CHECK: .long 5
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; CHECK-NOT: l_localgotequiv-(_table+20)
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; CHECK-NEXT: L_localfoo$non_lazy_ptr-(_table+20)
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%struct.data { i32 4, %struct.anon { i32 5,
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i32 sub (i32 ptrtoint (i32** @localgotequiv to i32),
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i32 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i32 1, i32 1, i32 1) to i32))}
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},
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; CHECK: .long 5
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; CHECK-NOT: l_extgotequiv-(_table+32)
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; CHECK-NEXT: L_extfoo$non_lazy_ptr-(_table+32)
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%struct.data { i32 4, %struct.anon { i32 5,
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i32 sub (i32 ptrtoint (i32** @extgotequiv to i32),
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i32 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i32 2, i32 1, i32 1) to i32))}
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},
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; Test support for arbitrary constants into the GOTPCREL offset
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; CHECK: .long 5
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; CHECK-NOT: (l_extgotequiv-(_table+44))+24
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; CHECK-NEXT: L_extfoo$non_lazy_ptr-(_table+20)
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%struct.data { i32 4, %struct.anon { i32 5,
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i32 add (i32 sub (i32 ptrtoint (i32** @extgotequiv to i32),
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i32 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i32 3, i32 1, i32 1) to i32)),
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i32 24)}
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}
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], align 16
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; Test multiple uses of GOT equivalents.
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; CHECK-LABEL: _delta
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; CHECK: .long L_extfoo$non_lazy_ptr-_delta
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@delta = global i32 sub (i32 ptrtoint (i32** @extgotequiv to i32),
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i32 ptrtoint (i32* @delta to i32))
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; CHECK-LABEL: _deltaplus:
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; CHECK: .long L_localfoo$non_lazy_ptr-(_deltaplus-55)
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@deltaplus = global i32 add (i32 sub (i32 ptrtoint (i32** @localgotequiv to i32),
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i32 ptrtoint (i32* @deltaplus to i32)),
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i32 55)
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define i32 @t0(i32 %a) {
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%x = add i32 sub (i32 ptrtoint (i32** @bargotequiv to i32),
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i32 ptrtoint (i32 (i32)* @t0 to i32)), %a
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ret i32 %x
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}
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; Test indirect local symbols.
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; CHECK-LABEL: _localindirect
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; CHECK: .long 65603
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@localindirect = internal constant i32 65603
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@got.localindirect = private unnamed_addr constant i32* @localindirect
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; CHECK-LABEL: _localindirectuser:
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; CHECK: .long L_localindirect$non_lazy_ptr-_localindirectuser
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@localindirectuser = internal constant
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i32 sub (i32 ptrtoint (i32** @got.localindirect to i32),
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i32 ptrtoint (i32* @localindirectuser to i32))
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; Test internal indirect local symbols where the user doesn't see the
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; definition of the other symbols yet.
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; We used to check if the symbol is defined and not external to guess if it has
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; local linkage, but that doesn't work if the symbol is defined after. The code
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; should check if the GlobalValue itself has local linkage.
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; CHECK-LABEL: _undeflocalindirectuser:
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; CHECK: .long L_undeflocalindirect$non_lazy_ptr-_undeflocalindirectuser
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@undeflocalindirectuser = internal constant
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i32 sub (i32 ptrtoint (i32** @got.undeflocalindirect to i32),
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i32 ptrtoint (i32* @undeflocalindirectuser to i32)),
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section "__TEXT,__const"
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; CHECK-LABEL: _undeflocalindirect:
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; CHECK: .long 65603
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@undeflocalindirect = internal constant i32 65603
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@got.undeflocalindirect = private unnamed_addr constant i32* @undeflocalindirect
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; CHECK-LABEL: .section __IMPORT,__pointers
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; CHECK-LABEL: L_localfoo$non_lazy_ptr:
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; CHECK: .indirect_symbol _localfoo
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; CHECK-NOT: .long _localfoo
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; CHECK-NEXT: .long 0
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; CHECK-LABEL: L_localindirect$non_lazy_ptr:
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; CHECK: .indirect_symbol _localindirect
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; CHECK-NOT: .long 0
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; CHECK-NEXT: .long _localindirect
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; CHECK-LABEL: L_undeflocalindirect$non_lazy_ptr:
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; CHECK: .indirect_symbol _undeflocalindirect
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; CHECK-NOT: .long 0
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; CHECK-NEXT: .long _undeflocalindirect
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