mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-31 12:30:06 +00:00
Follow up from r231505. Fix the non-determinism by using a MapVector and reintroduce the AArch64 testcase. Defer deleting the got candidates up to the end and remove them in a bulk, avoiding linear time removal of each element. Thanks to Renato Golin for trying it out on other platforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231830 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
3.5 KiB
LLVM
93 lines
3.5 KiB
LLVM
; RUN: llc -mtriple=arm64-apple-darwin %s -o - | FileCheck %s
|
|
|
|
; 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 }
|
|
|
|
@localfoo = global i32 42
|
|
@localgotequiv = private unnamed_addr constant i32* @localfoo
|
|
|
|
@extfoo = external global i32
|
|
@extgotequiv = private unnamed_addr constant i32* @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.
|
|
;
|
|
; CHECK: l_bargotequiv:
|
|
; CHECK-NEXT: .quad _extbar
|
|
@extbar = external global i32
|
|
@bargotequiv = private unnamed_addr constant i32* @extbar
|
|
|
|
@table = global [4 x %struct.data] [
|
|
; CHECK-LABEL: _table
|
|
%struct.data { i32 1, %struct.anon { i32 2, i32 3 } },
|
|
; Test GOT equivalent usage inside nested constant arrays.
|
|
|
|
; CHECK: .long 5
|
|
; CHECK-NOT: .long _localgotequiv-(_table+20)
|
|
; CHECK-NEXT: Ltmp1:
|
|
; CHECK-NEXT: .long _localfoo@GOT-Ltmp1
|
|
%struct.data { i32 4, %struct.anon { i32 5,
|
|
i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64),
|
|
i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data]* @table, i32 0, i64 1, i32 1, i32 1) to i64))
|
|
to i32)}
|
|
},
|
|
|
|
; CHECK: .long 5
|
|
; CHECK-NOT: _extgotequiv-(_table+32)
|
|
; CHECK-NEXT: Ltmp2:
|
|
; CHECK-NEXT: _extfoo@GOT-Ltmp2
|
|
%struct.data { i32 4, %struct.anon { i32 5,
|
|
i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
|
|
i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data]* @table, i32 0, i64 2, i32 1, i32 1) to i64))
|
|
to i32)}
|
|
},
|
|
; Test support for arbitrary constants into the GOTPCREL offset, which is
|
|
; supported on x86-64 but not on ARM64
|
|
|
|
; CHECK: .long 5
|
|
; CHECK-NEXT: .long (l_extgotequiv-(_table+44))+24
|
|
%struct.data { i32 4, %struct.anon { i32 5,
|
|
i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
|
|
i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data]* @table, i32 0, i64 3, i32 1, i32 1) to i64))
|
|
to i32), i32 24)}
|
|
}
|
|
], align 16
|
|
|
|
; Test multiple uses of GOT equivalents.
|
|
|
|
; CHECK-LABEL: _delta
|
|
; CHECK: Ltmp3:
|
|
; CHECK-NEXT: .long _extfoo@GOT-Ltmp3
|
|
@delta = global i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64),
|
|
i64 ptrtoint (i32* @delta to i64))
|
|
to i32)
|
|
|
|
; CHECK-LABEL: _deltaplus:
|
|
; CHECK: .long (l_localgotequiv-_deltaplus)+55
|
|
@deltaplus = global i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64),
|
|
i64 ptrtoint (i32* @deltaplus to i64))
|
|
to i32), i32 55)
|
|
|
|
define i32 @t0(i32 %a) {
|
|
%x = add i32 trunc (i64 sub (i64 ptrtoint (i32** @bargotequiv to i64),
|
|
i64 ptrtoint (i32 (i32)* @t0 to i64))
|
|
to i32), %a
|
|
ret i32 %x
|
|
}
|
|
|
|
; Check that these got equivalent symbols are emitted on ARM64. Since ARM64
|
|
; does not support encoding an extra offset with @GOT, we still need to emit the
|
|
; equivalents for use by such IR constructs. Check them at the end of the test
|
|
; since they will start out as GOT equivalent candidates, but they are actually
|
|
; needed and are therefore emitted at the end.
|
|
|
|
; CHECK-LABEL: l_localgotequiv:
|
|
; CHECK-NEXT: .quad _localfoo
|
|
|
|
; CHECK-LABEL: l_extgotequiv:
|
|
; CHECK-NEXT: .quad _extfoo
|