1 ; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t 2 ; RUN: FileCheck %s -check-prefix=X86 < %t 3 ; RUN: FileCheck %s -check-prefix=X86-GOT-EQUIV < %t 4 ; RUN: FileCheck %s -check-prefix=X86-NOGOT-EQUIV < %t 5 6 ; GOT equivalent globals references can be replaced by the GOT entry of the 7 ; final symbol instead. 8 9 %struct.data = type { i32, %struct.anon } 10 %struct.anon = type { i32, i32 } 11 12 ; Check that these got equivalent symbols are never emitted. 13 14 ; X86-GOT-EQUIV-NOT: L_localgotequiv 15 ; X86-GOT-EQUIV-NOT: l_extgotequiv 16 @localfoo = global i32 42 17 @localgotequiv = private unnamed_addr constant i32* @localfoo 18 19 @extfoo = external global i32 20 @extgotequiv = private unnamed_addr constant i32* @extfoo 21 22 ; Don't replace GOT equivalent usage within instructions and emit the GOT 23 ; equivalent since it can't be replaced by the GOT entry. @bargotequiv is 24 ; used by an instruction inside @t0. 25 ; 26 ; X86: l_bargotequiv: 27 ; X86-NEXT: .quad _extbar 28 @extbar = external global i32 29 @bargotequiv = private unnamed_addr constant i32* @extbar 30 31 @table = global [4 x %struct.data] [ 32 %struct.data { i32 1, %struct.anon { i32 2, i32 3 } }, 33 ; Test GOT equivalent usage inside nested constant arrays. 34 35 ; X86: .long 5 36 ; X86-NOT: .long _localgotequiv-(_table+20) 37 ; X86-NEXT: .long _localfoo@GOTPCREL+4 38 %struct.data { i32 4, %struct.anon { i32 5, 39 i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64), 40 i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 1, i32 1, i32 1) to i64)) 41 to i32)} 42 }, 43 ; X86: .long 5 44 ; X86-NOT: _extgotequiv-(_table+32) 45 ; X86-NEXT: .long _extfoo@GOTPCREL+4 46 %struct.data { i32 4, %struct.anon { i32 5, 47 i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64), 48 i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 2, i32 1, i32 1) to i64)) 49 to i32)} 50 }, 51 ; Test support for arbitrary constants into the GOTPCREL offset. 52 53 ; X86: .long 5 54 ; X86-NOT: _extgotequiv-(_table+44) 55 ; X86-NEXT: .long _extfoo@GOTPCREL+28 56 %struct.data { i32 4, %struct.anon { i32 5, 57 i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64), 58 i64 ptrtoint (i32* getelementptr inbounds ([4 x %struct.data], [4 x %struct.data]* @table, i32 0, i64 3, i32 1, i32 1) to i64)) 59 to i32), i32 24)} 60 } 61 ], align 16 62 63 ; Test multiple uses of GOT equivalents. 64 65 ; X86-LABEL: _delta 66 ; X86: .long _extfoo@GOTPCREL+4 67 @delta = global i32 trunc (i64 sub (i64 ptrtoint (i32** @extgotequiv to i64), 68 i64 ptrtoint (i32* @delta to i64)) 69 to i32) 70 71 ; X86-LABEL: _deltaplus: 72 ; X86: .long _localfoo@GOTPCREL+59 73 @deltaplus = global i32 add (i32 trunc (i64 sub (i64 ptrtoint (i32** @localgotequiv to i64), 74 i64 ptrtoint (i32* @deltaplus to i64)) 75 to i32), i32 55) 76 77 define i32 @t0(i32 %a) { 78 %x = add i32 trunc (i64 sub (i64 ptrtoint (i32** @bargotequiv to i64), 79 i64 ptrtoint (i32 (i32)* @t0 to i64)) 80 to i32), %a 81 ret i32 %x 82 } 83 84 ; Also test direct instruction uses. 85 define i32** @t1() { 86 ret i32** @bargotequiv 87 } 88 89 ; Do not crash when a pattern cannot be matched as a GOT equivalent 90 define void @foo() { 91 ; X86-NOGOT-EQUIV-LABEL: _foo: 92 ; X86-NOGOT-EQUIV: leaq _b(%rip), %rax 93 store i8** @b, i8*** null 94 ret void 95 } 96 @a = external global i8 97 @b = internal unnamed_addr constant i8* @a 98 99 ; X86-NOGOT-EQUIV-LABEL: _c: 100 ; X86-NOGOT-EQUIV: .quad _b 101 @c = global i8** @b 102
