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i386.h (TARGET_TLS_INDIRECT_SEG_REFS): New.

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* config/i386/i386.h (TARGET_TLS_INDIRECT_SEG_REFS): New.
	* config/i386/i386.c (ix86_decompose_address): Use
	TARGET_TLS_INDIRECT_SEG_REFS to prevent %fs:(%reg) addresses.
	(legitimize_tls_address): Use TARGET_TLS_INDIRECT_SEG_REFS to load
	thread pointer to a register.

From-SVN: r185278
This commit is contained in:
Uros Bizjak 2012-03-13 08:06:51 +01:00 • committed by Uros Bizjak
parent a89ff70f6d
commit 6c2f0f83a5
3 changed files with 23 additions and 8 deletions
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8
gcc/ChangeLog
View file

@ -1,3 +1,11 @@
2012-03-13 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.h (TARGET_TLS_INDIRECT_SEG_REFS): New.
* config/i386/i386.c (ix86_decompose_address): Use
TARGET_TLS_INDIRECT_SEG_REFS to prevent %fs:(%reg) addresses.
(legitimize_tls_address): Use TARGET_TLS_INDIRECT_SEG_REFS to load
thread pointer to a register.
2012-03-12 H.J. Lu <hongjiu.lu@intel.com>
* config/i386/i386.md (*tls_global_dynamic_64_<mode>): Remove :P

20
gcc/config/i386/i386.c
View file

@ -11552,11 +11552,6 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
else
disp = addr; /* displacement */
/* Since address override works only on the (reg32) part in fs:(reg32),
we can't use it as memory operand. */
if (Pmode != word_mode && seg == SEG_FS && (base || index))
return 0;
if (index)
{
if (REG_P (index))
@ -11568,6 +11563,10 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
return 0;
}
if (seg != SEG_DEFAULT && (base || index)
&& !TARGET_TLS_INDIRECT_SEG_REFS)
return 0;
/* Extract the integral value of scale. */
if (scale_rtx)
{
@ -12696,7 +12695,9 @@ legitimize_tls_address (rtx x, enum tls_model model, bool for_mov)
if (TARGET_64BIT || TARGET_ANY_GNU_TLS)
{
base = get_thread_pointer (for_mov || !TARGET_TLS_DIRECT_SEG_REFS);
base = get_thread_pointer (for_mov
|| !(TARGET_TLS_DIRECT_SEG_REFS
&& TARGET_TLS_INDIRECT_SEG_REFS));
off = force_reg (Pmode, off);
return gen_rtx_PLUS (Pmode, base, off);
}
@ -12716,7 +12717,9 @@ legitimize_tls_address (rtx x, enum tls_model model, bool for_mov)
if (TARGET_64BIT || TARGET_ANY_GNU_TLS)
{
base = get_thread_pointer (for_mov || !TARGET_TLS_DIRECT_SEG_REFS);
base = get_thread_pointer (for_mov
|| !(TARGET_TLS_DIRECT_SEG_REFS
&& TARGET_TLS_INDIRECT_SEG_REFS));
return gen_rtx_PLUS (Pmode, base, off);
}
else
@ -13249,7 +13252,8 @@ ix86_delegitimize_tls_address (rtx orig_x)
rtx x = orig_x, unspec;
struct ix86_address addr;
if (!TARGET_TLS_DIRECT_SEG_REFS)
if (!(TARGET_TLS_DIRECT_SEG_REFS
&& TARGET_TLS_INDIRECT_SEG_REFS))
return orig_x;
if (MEM_P (x))
x = XEXP (x, 0);

3
gcc/config/i386/i386.h
View file

@ -467,6 +467,9 @@ extern int x86_prefetch_sse;
#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT 0
#endif
/* Address override works only on the (%reg) part of %fs:(%reg). */
#define TARGET_TLS_INDIRECT_SEG_REFS (Pmode == word_mode)
/* Fence to use after loop using storent. */
extern tree x86_mfence;