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; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t
; RUN: FileCheck %s -check-prefix=X86 < %t
; RUN: FileCheck %s -check-prefix=X86-GOT-EQUIV < %t
; RUN: FileCheck %s -check-prefix=X86-NOGOT-EQUIV < %t
; GOT equivalent globals references can be replaced by the GOT entry of the
; final symbol instead.
%struct.data = type { i32, %struct.anon }
%struct.anon = type { i32, i32 }
; Check that these got equivalent symbols are never emitted.
; X86-GOT-EQUIV-NOT: L_localgotequiv
; X86-GOT-EQUIV-NOT: l_extgotequiv
@localfoo = global i32 42
@localgotequiv = private unnamed_addr constant ptr @localfoo
@extfoo = external global i32
@extgotequiv = private unnamed_addr constant ptr @extfoo
; Don't replace GOT equivalent usage within instructions and emit the GOT
; equivalent since it can't be replaced by the GOT entry. @bargotequiv is
; used by an instruction inside @t0.
;
; X86: l_bargotequiv:
; X86-NEXT: .quad _extbar
@extbar = external global i32
@bargotequiv = private unnamed_addr constant ptr @extbar
@table = global [4 x %struct.data] [
%struct.data { i32 1, %struct.anon { i32 2, i32 3 } },
; Test GOT equivalent usage inside nested constant arrays.
; X86: .long 5
; X86-NOT: .long _localgotequiv-(_table+20)
; X86-NEXT: .long _localfoo@GOTPCREL+4
%struct.data { i32 4, %struct.anon { i32 5,
i32 trunc (i64 sub (i64 ptrtoint (ptr @localgotequiv to i64),
i64 ptrtoint (ptr getelementptr inbounds ([4 x %struct.data], ptr @table, i32 0, i64 1, i32 1, i32 1) to i64))
to i32)}
},
; X86: .long 5
; X86-NOT: _extgotequiv-(_table+32)
; X86-NEXT: .long _extfoo@GOTPCREL+4
%struct.data { i32 4, %struct.anon { i32 5,
i32 trunc (i64 sub (i64 ptrtoint (ptr @extgotequiv to i64),
i64 ptrtoint (ptr getelementptr inbounds ([4 x %struct.data], ptr @table, i32 0, i64 2, i32 1, i32 1) to i64))
to i32)}
},
; Test support for arbitrary constants into the GOTPCREL offset.
; X86: .long 5
; X86-NOT: _extgotequiv-(_table+44)
; X86-NEXT: .long _extfoo@GOTPCREL+28
%struct.data { i32 4, %struct.anon { i32 5,
i32 add (i32 trunc (i64 sub (i64 ptrtoint (ptr @extgotequiv to i64),
i64 ptrtoint (ptr getelementptr inbounds ([4 x %struct.data], ptr @table, i32 0, i64 3, i32 1, i32 1) to i64))
to i32), i32 24)}
}
], align 16
; Test multiple uses of GOT equivalents.
; X86-LABEL: _delta
; X86: .long _extfoo@GOTPCREL+4
@delta = global i32 trunc (i64 sub (i64 ptrtoint (ptr @extgotequiv to i64),
i64 ptrtoint (ptr @delta to i64))
to i32)
; X86-LABEL: _deltaplus:
; X86: .long _localfoo@GOTPCREL+59
@deltaplus = global i32 add (i32 trunc (i64 sub (i64 ptrtoint (ptr @localgotequiv to i64),
i64 ptrtoint (ptr @deltaplus to i64))
to i32), i32 55)
define i32 @t0(i32 %a) {
%x = add i32 trunc (i64 sub (i64 ptrtoint (ptr @bargotequiv to i64),
i64 ptrtoint (ptr @t0 to i64))
to i32), %a
ret i32 %x
}
; Also test direct instruction uses.
define ptr @t1() {
ret ptr @bargotequiv
}
; Do not crash when a pattern cannot be matched as a GOT equivalent
define void @foo() {
; X86-NOGOT-EQUIV-LABEL: _foo:
; X86-NOGOT-EQUIV: leaq _b(%rip), %rax
store ptr @b, ptr null
ret void
}
@a = external global i8
@b = internal unnamed_addr constant ptr @a
; X86-NOGOT-EQUIV-LABEL: _c:
; X86-NOGOT-EQUIV: .quad _b
@c = global ptr @b
; X86-LABEL: table_with_negative_offset:
; X86-NEXT: .long _a@GOTPCREL+4294967292
@table_with_negative_offset = dso_local unnamed_addr constant [3 x i32] [
i32 trunc (
i64 sub (
i64 ptrtoint (ptr @b to i64),
i64 ptrtoint (ptr getelementptr inbounds ([3 x i32], ptr @table_with_negative_offset, i32 0, i32 2) to i64)
)
to i32),
i32 0,
i32 0
], align 4
|
