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llvm-mirror/test/CodeGen/X86/dllexport.ll

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X86: repair export compatibility with MinGW/cygwin Both MinGW and cygwin (i686) construct export directives without the global leader prefix. This is mostly due to the fact that they use GNU ld which does not correctly handle the export directive. This apparently has been been broken for a while. However, this was recently reported as being broken by mingwandroid and diorcety of the msys2 project. Remove the global leader prefix if targeting MinGW or cygwin, otherwise, retain the global leader prefix. Add an explicit test for cygwin's behaviour of export directives. llvm-svn: 207926
2014-05-04 02:03:48 +02:00
; RUN: llc -mtriple i386-pc-win32 < %s \
; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-CL %s
; RUN: llc -mtriple i386-pc-mingw32 < %s \
; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
; RUN: llc -mtriple i686-pc-cygwin %s -o - \
; RUN: | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
Testcases for recent stdcall / fastcall mangling improvements llvm-svn: 95982
2010-02-12 16:29:13 +01:00
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. llvm-svn: 199218
2014-01-14 16:22:47 +01:00
; CHECK: .text
Testcases for recent stdcall / fastcall mangling improvements llvm-svn: 95982
2010-02-12 16:29:13 +01:00
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. llvm-svn: 199218
2014-01-14 16:22:47 +01:00
define void @notExported() {
ret void
}
; CHECK: .globl _f1
define dllexport void @f1() {
ret void
}
; CHECK: .globl _f2
define dllexport void @f2() unnamed_addr {
ret void
}
Don't dllexport declarations Fixes PR22488 llvm-svn: 228411
2015-02-06 18:59:49 +01:00
declare dllexport void @not_defined()
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. llvm-svn: 199218
2014-01-14 16:22:47 +01:00
; CHECK: .globl _stdfun@0
define dllexport x86_stdcallcc void @stdfun() nounwind {
ret void
}
; CHECK: .globl @fastfun@0
define dllexport x86_fastcallcc i32 @fastfun() nounwind {
Testcases for recent stdcall / fastcall mangling improvements llvm-svn: 95982
2010-02-12 16:29:13 +01:00
ret i32 0
}
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. llvm-svn: 199218
2014-01-14 16:22:47 +01:00
; CHECK: .globl _thisfun
define dllexport x86_thiscallcc void @thisfun() nounwind {
ret void
}
; CHECK: .globl _lnk1
define linkonce_odr dllexport void @lnk1() {
ret void
}
; CHECK: .globl _lnk2
define linkonce_odr dllexport void @lnk2() alwaysinline {
ret void
}
; CHECK: .globl _weak1
define weak_odr dllexport void @weak1() {
ret void
}
; CHECK: .data
; CHECK: .globl _Var1
@Var1 = dllexport global i32 1, align 4
MC: Emit COFF section flags in the "proper" order COFF section flags are not idempotent: 'rd' will make a read-write section because 'd' implies write 'dr' will make a read-only section because 'r' disables write llvm-svn: 228490
2015-02-07 09:26:40 +01:00
; CHECK: .rdata,"dr"
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. llvm-svn: 199218
2014-01-14 16:22:47 +01:00
; CHECK: .globl _Var2
@Var2 = dllexport unnamed_addr constant i32 1
; CHECK: .comm _Var3
@Var3 = common dllexport global i32 0, align 4
; CHECK: .globl _WeakVar1
@WeakVar1 = weak_odr dllexport global i32 1, align 4
; CHECK: .globl _WeakVar2
@WeakVar2 = weak_odr dllexport unnamed_addr constant i32 1
Handle dllexport for global aliases llvm-svn: 199219
2014-01-14 16:23:25 +01:00
; CHECK: .globl _alias
; CHECK: _alias = _notExported
[opaque pointer type] Add textual IR support for explicit type parameter for global aliases update.py: import fileinput import sys import re alias_match_prefix = r"(.*(?:=|:|^)\s*(?:external |)(?:(?:private|internal|linkonce|linkonce_odr|weak|weak_odr|common|appending|extern_weak|available_externally) )?(?:default |hidden |protected )?(?:dllimport |dllexport )?(?:unnamed_addr |)(?:thread_local(?:\([a-z]*\))? )?alias" plain = re.compile(alias_match_prefix + r" (.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|addrspacecast|\[\[[a-zA-Z]|\{\{).*$)") cast = re.compile(alias_match_prefix + r") ((?:bitcast|inttoptr|addrspacecast)\s*\(.* to (.*?)(| addrspace\(\d+\) *)\*\)\s*(?:;.*)?$)") gep = re.compile(alias_match_prefix + r") ((?:getelementptr)\s*(?:inbounds)?\s*\((?P<type>.*), (?P=type)(?:\s*addrspace\(\d+\)\s*)?\* .*\)\s*(?:;.*)?$)") def conv(line): m = re.match(cast, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(gep, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(plain, line) if m: return m.group(1) + ", " + m.group(2) + m.group(3) + "*" + m.group(4) + "\n" return line for line in sys.stdin: sys.stdout.write(conv(line)) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh llvm-svn: 247378
2015-09-11 05:22:04 +02:00
@alias = dllexport alias void(), void()* @notExported
Handle dllexport for global aliases llvm-svn: 199219
2014-01-14 16:23:25 +01:00
; CHECK: .globl _alias2
; CHECK: _alias2 = _f1
[opaque pointer type] Add textual IR support for explicit type parameter for global aliases update.py: import fileinput import sys import re alias_match_prefix = r"(.*(?:=|:|^)\s*(?:external |)(?:(?:private|internal|linkonce|linkonce_odr|weak|weak_odr|common|appending|extern_weak|available_externally) )?(?:default |hidden |protected )?(?:dllimport |dllexport )?(?:unnamed_addr |)(?:thread_local(?:\([a-z]*\))? )?alias" plain = re.compile(alias_match_prefix + r" (.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|addrspacecast|\[\[[a-zA-Z]|\{\{).*$)") cast = re.compile(alias_match_prefix + r") ((?:bitcast|inttoptr|addrspacecast)\s*\(.* to (.*?)(| addrspace\(\d+\) *)\*\)\s*(?:;.*)?$)") gep = re.compile(alias_match_prefix + r") ((?:getelementptr)\s*(?:inbounds)?\s*\((?P<type>.*), (?P=type)(?:\s*addrspace\(\d+\)\s*)?\* .*\)\s*(?:;.*)?$)") def conv(line): m = re.match(cast, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(gep, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(plain, line) if m: return m.group(1) + ", " + m.group(2) + m.group(3) + "*" + m.group(4) + "\n" return line for line in sys.stdin: sys.stdout.write(conv(line)) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh llvm-svn: 247378
2015-09-11 05:22:04 +02:00
@alias2 = dllexport alias void(), void()* @f1
Handle dllexport for global aliases llvm-svn: 199219
2014-01-14 16:23:25 +01:00
; CHECK: .globl _alias3
Prevent alias from pointing to weak aliases. This adds back r204781. Original message: Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. llvm-svn: 204934
2014-03-27 16:26:56 +01:00
; CHECK: _alias3 = _notExported
[opaque pointer type] Add textual IR support for explicit type parameter for global aliases update.py: import fileinput import sys import re alias_match_prefix = r"(.*(?:=|:|^)\s*(?:external |)(?:(?:private|internal|linkonce|linkonce_odr|weak|weak_odr|common|appending|extern_weak|available_externally) )?(?:default |hidden |protected )?(?:dllimport |dllexport )?(?:unnamed_addr |)(?:thread_local(?:\([a-z]*\))? )?alias" plain = re.compile(alias_match_prefix + r" (.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|addrspacecast|\[\[[a-zA-Z]|\{\{).*$)") cast = re.compile(alias_match_prefix + r") ((?:bitcast|inttoptr|addrspacecast)\s*\(.* to (.*?)(| addrspace\(\d+\) *)\*\)\s*(?:;.*)?$)") gep = re.compile(alias_match_prefix + r") ((?:getelementptr)\s*(?:inbounds)?\s*\((?P<type>.*), (?P=type)(?:\s*addrspace\(\d+\)\s*)?\* .*\)\s*(?:;.*)?$)") def conv(line): m = re.match(cast, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(gep, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(plain, line) if m: return m.group(1) + ", " + m.group(2) + m.group(3) + "*" + m.group(4) + "\n" return line for line in sys.stdin: sys.stdout.write(conv(line)) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh llvm-svn: 247378
2015-09-11 05:22:04 +02:00
@alias3 = dllexport alias void(), void()* @notExported
Handle dllexport for global aliases llvm-svn: 199219
2014-01-14 16:23:25 +01:00
; CHECK: .weak _weak_alias
; CHECK: _weak_alias = _f1
[opaque pointer type] Add textual IR support for explicit type parameter for global aliases update.py: import fileinput import sys import re alias_match_prefix = r"(.*(?:=|:|^)\s*(?:external |)(?:(?:private|internal|linkonce|linkonce_odr|weak|weak_odr|common|appending|extern_weak|available_externally) )?(?:default |hidden |protected )?(?:dllimport |dllexport )?(?:unnamed_addr |)(?:thread_local(?:\([a-z]*\))? )?alias" plain = re.compile(alias_match_prefix + r" (.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|addrspacecast|\[\[[a-zA-Z]|\{\{).*$)") cast = re.compile(alias_match_prefix + r") ((?:bitcast|inttoptr|addrspacecast)\s*\(.* to (.*?)(| addrspace\(\d+\) *)\*\)\s*(?:;.*)?$)") gep = re.compile(alias_match_prefix + r") ((?:getelementptr)\s*(?:inbounds)?\s*\((?P<type>.*), (?P=type)(?:\s*addrspace\(\d+\)\s*)?\* .*\)\s*(?:;.*)?$)") def conv(line): m = re.match(cast, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(gep, line) if m: return m.group(1) + " " + m.group(3) + ", " + m.group(2) m = re.match(plain, line) if m: return m.group(1) + ", " + m.group(2) + m.group(3) + "*" + m.group(4) + "\n" return line for line in sys.stdin: sys.stdout.write(conv(line)) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh llvm-svn: 247378
2015-09-11 05:22:04 +02:00
@weak_alias = weak_odr dllexport alias void(), void()* @f1
Handle dllexport for global aliases llvm-svn: 199219
2014-01-14 16:23:25 +01:00
Testcases for recent stdcall / fastcall mangling improvements llvm-svn: 95982
2010-02-12 16:29:13 +01:00
; CHECK: .section .drectve
Don't dllexport declarations Fixes PR22488 llvm-svn: 228411
2015-02-06 18:59:49 +01:00
; CHECK-CL-NOT: not_exported
Teach LTOModule to emit linker flags for dllexported symbols, plus interface cleanup. This change unifies how LTOModule and the backend obtain linker flags for globals: via a new TargetLoweringObjectFile member function named emitLinkerFlagsForGlobal. A new function LTOModule::getLinkerOpts() returns the list of linker flags as a single concatenated string. This change affects the C libLTO API: the function lto_module_get_*deplibs now exposes an empty list, and lto_module_get_*linkeropts exposes a single element which combines the contents of all observed flags. libLTO should never have tried to parse the linker flags; it is the linker's job to do so. Because linkers will need to be able to parse flags in regular object files, it makes little sense for libLTO to have a redundant mechanism for doing so. The new API is compatible with the old one. It is valid for a user to specify multiple linker flags in a single pragma directive like this: #pragma comment(linker, "/defaultlib:foo /defaultlib:bar") The previous implementation would not have exposed either flag via lto_module_get_*deplibs (as the test in TargetLoweringObjectFileCOFF::getDepLibFromLinkerOpt was case sensitive) and would have exposed "/defaultlib:foo /defaultlib:bar" as a single flag via lto_module_get_*linkeropts. This may have been a bug in the implementation, but it does give us a chance to fix the interface. Differential Revision: http://reviews.llvm.org/D10548 llvm-svn: 241010
2015-06-30 00:04:09 +02:00
; CHECK-CL: /EXPORT:_f1
; CHECK-CL-SAME: /EXPORT:_f2
; CHECK-CL-SAME: /EXPORT:_stdfun@0
; CHECK-CL-SAME: /EXPORT:@fastfun@0
; CHECK-CL-SAME: /EXPORT:_thisfun
; CHECK-CL-SAME: /EXPORT:_lnk1
; CHECK-CL-SAME: /EXPORT:_lnk2
; CHECK-CL-SAME: /EXPORT:_weak1
; CHECK-CL-SAME: /EXPORT:_Var1,DATA
; CHECK-CL-SAME: /EXPORT:_Var2,DATA
; CHECK-CL-SAME: /EXPORT:_Var3,DATA
; CHECK-CL-SAME: /EXPORT:_WeakVar1,DATA
; CHECK-CL-SAME: /EXPORT:_WeakVar2,DATA
; CHECK-CL-SAME: /EXPORT:_alias
; CHECK-CL-SAME: /EXPORT:_alias2
; CHECK-CL-SAME: /EXPORT:_alias3
; CHECK-CL-SAME: /EXPORT:_weak_alias"
Don't dllexport declarations Fixes PR22488 llvm-svn: 228411
2015-02-06 18:59:49 +01:00
; CHECK-CL-NOT: not_exported
Teach LTOModule to emit linker flags for dllexported symbols, plus interface cleanup. This change unifies how LTOModule and the backend obtain linker flags for globals: via a new TargetLoweringObjectFile member function named emitLinkerFlagsForGlobal. A new function LTOModule::getLinkerOpts() returns the list of linker flags as a single concatenated string. This change affects the C libLTO API: the function lto_module_get_*deplibs now exposes an empty list, and lto_module_get_*linkeropts exposes a single element which combines the contents of all observed flags. libLTO should never have tried to parse the linker flags; it is the linker's job to do so. Because linkers will need to be able to parse flags in regular object files, it makes little sense for libLTO to have a redundant mechanism for doing so. The new API is compatible with the old one. It is valid for a user to specify multiple linker flags in a single pragma directive like this: #pragma comment(linker, "/defaultlib:foo /defaultlib:bar") The previous implementation would not have exposed either flag via lto_module_get_*deplibs (as the test in TargetLoweringObjectFileCOFF::getDepLibFromLinkerOpt was case sensitive) and would have exposed "/defaultlib:foo /defaultlib:bar" as a single flag via lto_module_get_*linkeropts. This may have been a bug in the implementation, but it does give us a chance to fix the interface. Differential Revision: http://reviews.llvm.org/D10548 llvm-svn: 241010
2015-06-30 00:04:09 +02:00
; CHECK-GCC-NOT: not_exported
; CHECK-GCC: -export:f1
; CHECK-GCC-SAME: -export:f2
; CHECK-GCC-SAME: -export:stdfun@0
; CHECK-GCC-SAME: -export:@fastfun@0
; CHECK-GCC-SAME: -export:thisfun
; CHECK-GCC-SAME: -export:lnk1
; CHECK-GCC-SAME: -export:lnk2
; CHECK-GCC-SAME: -export:weak1
; CHECK-GCC-SAME: -export:Var1,data
; CHECK-GCC-SAME: -export:Var2,data
; CHECK-GCC-SAME: -export:Var3,data
; CHECK-GCC-SAME: -export:WeakVar1,data
; CHECK-GCC-SAME: -export:WeakVar2,data
; CHECK-GCC-SAME: -export:alias
; CHECK-GCC-SAME: -export:alias2
; CHECK-GCC-SAME: -export:alias3
; CHECK-GCC-SAME: -export:weak_alias"
; CHECK-GCC-NOT: not_exported
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