llvm-6502/test/CodeGen/X86/tls-models.ll
David Majnemer b3065539bd X86: Don't make illegal GOTTPOFF relocations
"ELF Handling for Thread-Local Storage" specifies that R_X86_64_GOTTPOFF
relocation target a movq or addq instruction.

Prohibit the truncation of such loads to movl or addl.

This fixes PR22083.

Differential Revision: http://reviews.llvm.org/D6839

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225250 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-06 07:12:52 +00:00

175 lines
4.5 KiB
LLVM

; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=X64 %s
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu -relocation-model=pic | FileCheck -check-prefix=X64_PIC %s
; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu | FileCheck -check-prefix=X32 %s
; RUN: llc < %s -march=x86 -mtriple=i386-linux-gnu -relocation-model=pic | FileCheck -check-prefix=X32_PIC %s
; Darwin always uses the same model.
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-apple-darwin | FileCheck -check-prefix=DARWIN %s
@external_gd = external thread_local global i32
@internal_gd = internal thread_local global i32 42
@external_ld = external thread_local(localdynamic) global i32
@internal_ld = internal thread_local(localdynamic) global i32 42
@external_ie = external thread_local(initialexec) global i32
@internal_ie = internal thread_local(initialexec) global i32 42
@external_le = external thread_local(localexec) global i32
@internal_le = internal thread_local(localexec) global i32 42
; ----- no model specified -----
define i32* @f1() {
entry:
ret i32* @external_gd
; Non-PIC code can use initial-exec, PIC code has to use general dynamic.
; X64-LABEL: f1:
; X64: external_gd@GOTTPOFF
; X32-LABEL: f1:
; X32: external_gd@INDNTPOFF
; X64_PIC-LABEL: f1:
; X64_PIC: external_gd@TLSGD
; X32_PIC-LABEL: f1:
; X32_PIC: external_gd@TLSGD
; DARWIN-LABEL: f1:
; DARWIN: _external_gd@TLVP
}
define i32* @f2() {
entry:
ret i32* @internal_gd
; Non-PIC code can use local exec, PIC code can use local dynamic.
; X64-LABEL: f2:
; X64: internal_gd@TPOFF
; X32-LABEL: f2:
; X32: internal_gd@NTPOFF
; X64_PIC-LABEL: f2:
; X64_PIC: internal_gd@TLSLD
; X32_PIC-LABEL: f2:
; X32_PIC: internal_gd@TLSLDM
; DARWIN-LABEL: f2:
; DARWIN: _internal_gd@TLVP
}
; ----- localdynamic specified -----
define i32* @f3() {
entry:
ret i32* @external_ld
; Non-PIC code can use initial exec, PIC code use local dynamic as specified.
; X64-LABEL: f3:
; X64: external_ld@GOTTPOFF
; X32-LABEL: f3:
; X32: external_ld@INDNTPOFF
; X64_PIC-LABEL: f3:
; X64_PIC: external_ld@TLSLD
; X32_PIC-LABEL: f3:
; X32_PIC: external_ld@TLSLDM
; DARWIN-LABEL: f3:
; DARWIN: _external_ld@TLVP
}
define i32* @f4() {
entry:
ret i32* @internal_ld
; Non-PIC code can use local exec, PIC code can use local dynamic.
; X64-LABEL: f4:
; X64: internal_ld@TPOFF
; X32-LABEL: f4:
; X32: internal_ld@NTPOFF
; X64_PIC-LABEL: f4:
; X64_PIC: internal_ld@TLSLD
; X32_PIC-LABEL: f4:
; X32_PIC: internal_ld@TLSLDM
; DARWIN-LABEL: f4:
; DARWIN: _internal_ld@TLVP
}
; ----- initialexec specified -----
define i32* @f5() {
entry:
ret i32* @external_ie
; Non-PIC and PIC code will use initial exec as specified.
; X64-LABEL: f5:
; X64: external_ie@GOTTPOFF
; X32-LABEL: f5:
; X32: external_ie@INDNTPOFF
; X64_PIC-LABEL: f5:
; X64_PIC: external_ie@GOTTPOFF
; X32_PIC-LABEL: f5:
; X32_PIC: external_ie@GOTNTPOFF
; DARWIN-LABEL: f5:
; DARWIN: _external_ie@TLVP
}
define i32* @f6() {
entry:
ret i32* @internal_ie
; Non-PIC code can use local exec, PIC code use initial exec as specified.
; X64-LABEL: f6:
; X64: internal_ie@TPOFF
; X32-LABEL: f6:
; X32: internal_ie@NTPOFF
; X64_PIC-LABEL: f6:
; X64_PIC: internal_ie@GOTTPOFF
; X32_PIC-LABEL: f6:
; X32_PIC: internal_ie@GOTNTPOFF
; DARWIN-LABEL: f6:
; DARWIN: _internal_ie@TLVP
}
define i32 @PR22083() {
entry:
ret i32 ptrtoint (i32* @external_ie to i32)
; X64-LABEL: PR22083:
; X64: movq external_ie@GOTTPOFF(%rip), %rax
; X64_PIC-LABEL: PR22083:
; X64_PIC: movq external_ie@GOTTPOFF(%rip), %rax
}
; ----- localexec specified -----
define i32* @f7() {
entry:
ret i32* @external_le
; Non-PIC and PIC code will use local exec as specified.
; X64-LABEL: f7:
; X64: external_le@TPOFF
; X32-LABEL: f7:
; X32: external_le@NTPOFF
; X64_PIC-LABEL: f7:
; X64_PIC: external_le@TPOFF
; X32_PIC-LABEL: f7:
; X32_PIC: external_le@NTPOFF
; DARWIN-LABEL: f7:
; DARWIN: _external_le@TLVP
}
define i32* @f8() {
entry:
ret i32* @internal_le
; Non-PIC and PIC code will use local exec as specified.
; X64-LABEL: f8:
; X64: internal_le@TPOFF
; X32-LABEL: f8:
; X32: internal_le@NTPOFF
; X64_PIC-LABEL: f8:
; X64_PIC: internal_le@TPOFF
; X32_PIC-LABEL: f8:
; X32_PIC: internal_le@NTPOFF
; DARWIN-LABEL: f8:
; DARWIN: _internal_le@TLVP
}