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llvm-6502/test/CodeGen/X86/global-sections.ll
Rafael Espindola 4bb535027e On MachO, don't put non-private constants in mergeable sections. 
On MachO, putting a symbol that doesn't start with a 'L' or 'l' in one of the
__TEXT,__literal* sections prevents the linker from merging the context of the
section.

Since private GVs are the ones the get mangled to start with 'L' or 'l', we now
only put those on the __TEXT,__literal* sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216682 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-28 20:13:31 +00:00

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; RUN: llc < %s -mtriple=i386-unknown-linux-gnu | FileCheck %s -check-prefix=LINUX
; RUN: llc < %s -mtriple=i386-apple-darwin9.7 | FileCheck %s -check-prefix=DARWIN
; RUN: llc < %s -mtriple=i386-apple-darwin10 -relocation-model=static | FileCheck %s -check-prefix=DARWIN-STATIC
; RUN: llc < %s -mtriple=x86_64-apple-darwin10 | FileCheck %s -check-prefix=DARWIN64
; RUN: llc < %s -mtriple=i386-unknown-linux-gnu -data-sections | FileCheck %s -check-prefix=LINUX-SECTIONS
; RUN: llc < %s -mtriple=i686-pc-win32 -data-sections -function-sections | FileCheck %s -check-prefix=WIN32-SECTIONS
define void @F1() {
ret void
}
; WIN32-SECTIONS: .section .text,"xr",one_only,_F1
; WIN32-SECTIONS: .globl _F1
; int G1;
@G1 = common global i32 0
; LINUX: .type G1,@object
; LINUX: .comm G1,4,4
; DARWIN: .comm _G1,4,2
; const int G2 __attribute__((weak)) = 42;
@G2 = weak_odr unnamed_addr constant i32 42
; TODO: linux drops this into .rodata, we drop it into ".gnu.linkonce.r.G2"
; DARWIN: .section __TEXT,__const_coal,coalesced
; DARWIN: _G2:
; DARWIN: .long 42
; int * const G3 = &G1;
@G3 = unnamed_addr constant i32* @G1
; DARWIN: .section __DATA,__const
; DARWIN: .globl _G3
; DARWIN: _G3:
; DARWIN: .long _G1
; LINUX: .section .rodata,"a",@progbits
; LINUX: .globl G3
; LINUX-SECTIONS: .section .rodata.G3,"a",@progbits
; LINUX-SECTIONS: .globl G3
; WIN32-SECTIONS: .section .rdata,"rd",one_only,_G3
; WIN32-SECTIONS: .globl _G3
; _Complex long long const G4 = 34;
@G4 = private unnamed_addr constant {i64,i64} { i64 34, i64 0 }
; DARWIN: .section __TEXT,__literal16,16byte_literals
; DARWIN: L_G4:
; DARWIN: .long 34
; DARWIN-STATIC: .section __TEXT,__literal16,16byte_literals
; DARWIN-STATIC: L_G4:
; DARWIN-STATIC: .long 34
; DARWIN64: .section __TEXT,__literal16,16byte_literals
; DARWIN64: L_G4:
; DARWIN64: .quad 34
; int G5 = 47;
@G5 = global i32 47
; LINUX: .data
; LINUX: .globl G5
; LINUX: G5:
; LINUX: .long 47
; DARWIN: .section __DATA,__data
; DARWIN: .globl _G5
; DARWIN: _G5:
; DARWIN: .long 47
; PR4584
@"foo bar" = linkonce global i32 42
; LINUX: .type "foo bar",@object
; LINUX: .section ".data.foo bar","aGw",@progbits,"foo bar",comdat
; LINUX: .weak "foo bar"
; LINUX: "foo bar":
; DARWIN: .section __DATA,__datacoal_nt,coalesced
; DARWIN: .globl "_foo bar"
; DARWIN: .weak_definition "_foo bar"
; DARWIN: "_foo bar":
; PR4650
@G6 = weak_odr unnamed_addr constant [1 x i8] c"\01"
; LINUX: .type G6,@object
; LINUX: .section .rodata.G6,"aG",@progbits,G6,comdat
; LINUX: .weak G6
; LINUX: G6:
; LINUX: .byte 1
; LINUX: .size G6, 1
; DARWIN: .section __TEXT,__const_coal,coalesced
; DARWIN: .globl _G6
; DARWIN: .weak_definition _G6
; DARWIN:_G6:
; DARWIN: .byte 1
@G7 = unnamed_addr constant [10 x i8] c"abcdefghi\00"
; DARWIN: __TEXT,__cstring,cstring_literals
; DARWIN: .globl _G7
; DARWIN: _G7:
; DARWIN: .asciz "abcdefghi"
; LINUX: .section .rodata.str1.1,"aMS",@progbits,1
; LINUX: .globl G7
; LINUX: G7:
; LINUX: .asciz "abcdefghi"
; LINUX-SECTIONS: .section .rodata.G7,"aMS",@progbits,1
; LINUX-SECTIONS: .globl G7
; WIN32-SECTIONS: .section .rdata,"rd",one_only,_G7
; WIN32-SECTIONS: .globl _G7
@G8 = unnamed_addr constant [4 x i16] [ i16 1, i16 2, i16 3, i16 0 ]
; DARWIN: .section __TEXT,__const
; DARWIN: .globl _G8
; DARWIN: _G8:
; LINUX: .section .rodata.str2.2,"aMS",@progbits,2
; LINUX: .globl G8
; LINUX:G8:
@G9 = unnamed_addr constant [4 x i32] [ i32 1, i32 2, i32 3, i32 0 ]
; DARWIN: .globl _G9
; DARWIN: _G9:
; LINUX: .section .rodata.str4.4,"aMS",@progbits,4
; LINUX: .globl G9
; LINUX:G9
@G10 = weak global [100 x i32] zeroinitializer, align 32 ; <[100 x i32]*> [#uses=0]
; DARWIN: .section __DATA,__datacoal_nt,coalesced
; DARWIN: .globl _G10
; DARWIN: .weak_definition _G10
; DARWIN: .align 5
; DARWIN: _G10:
; DARWIN: .space 400
; LINUX: .bss
; LINUX: .weak G10
; LINUX: .align 32
; LINUX: G10:
; LINUX: .zero 400
;; Zero sized objects should round up to 1 byte in zerofill directives.
; rdar://7886017
@G11 = global [0 x i32] zeroinitializer
@G12 = global {} zeroinitializer
@G13 = global { [0 x {}] } zeroinitializer
; DARWIN: .globl _G11
; DARWIN: .zerofill __DATA,__common,_G11,1,2
; DARWIN: .globl _G12
; DARWIN: .zerofill __DATA,__common,_G12,1,3
; DARWIN: .globl _G13
; DARWIN: .zerofill __DATA,__common,_G13,1,3
@G14 = private unnamed_addr constant [4 x i8] c"foo\00", align 1
; LINUX-SECTIONS: .type .LG14,@object # @G14
; LINUX-SECTIONS: .section .rodata..LG14,"aMS",@progbits,1
; LINUX-SECTIONS: .LG14:
; LINUX-SECTIONS: .asciz "foo"
; LINUX-SECTIONS: .size .LG14, 4
; WIN32-SECTIONS: .section .rdata,"rd"
; WIN32-SECTIONS: L_G14:
; WIN32-SECTIONS: .asciz "foo"
; cannot be merged on MachO, but can on other formats.
@G15 = unnamed_addr constant i64 0
; LINUX: .section .rodata.cst8,"aM",@progbits,8
; LINUX: G15:
; DARWIN: .section __TEXT,__const
; DARWIN: _G15:
; DARWIN-STATIC: .section __TEXT,__const
; DARWIN-STATIC: _G15:
; DARWIN64: .section __TEXT,__const
; DARWIN64: _G15:
; LINUX-SECTIONS: .section .rodata.G15,"aM",@progbits,8
; LINUX-SECTIONS: G15:
; WIN32-SECTIONS: .section .rdata,"rd",one_only,_G15
; WIN32-SECTIONS: _G15:
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