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alpha.c (alpha_does_function_need_gp): Test TARGET_PROFILING_NEEDS_GP in the if, instead of with an ifdef.

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* config/alpha/alpha.c (alpha_does_function_need_gp): Test
        TARGET_PROFILING_NEEDS_GP in the if, instead of with an ifdef.
        (alpha_expand_prologue): Emit prologue_mcount if needed.
        * config/alpha/alpha.h (TARGET_PROFILING_NEEDS_GP): Default to 0.
        * config/alpha/alpha.md (prologue_mcount): New.
        * config/alpha/linux.h (FUNCTION_PROFILER): Remove.
        (TARGET_PROFILING_NEEDS_GP): Undef before redefining.
        * config/alpha/netbsd.h: Likewise.

From-SVN: r34222
This commit is contained in:
Richard Henderson 2000-05-27 19:25:46 -07:00 committed by Richard Henderson
parent a1920fc3d7
commit 4f1c5cce90
6 changed files with 39 additions and 12 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
2000-05-27 Richard Henderson <rth@cygnus.com>
* config/alpha/alpha.c (alpha_does_function_need_gp): Test
TARGET_PROFILING_NEEDS_GP in the if, instead of with an ifdef.
(alpha_expand_prologue): Emit prologue_mcount if needed.
* config/alpha/alpha.h (TARGET_PROFILING_NEEDS_GP): Default to 0.
* config/alpha/alpha.md (prologue_mcount): New.
* config/alpha/linux.h (FUNCTION_PROFILER): Remove.
(TARGET_PROFILING_NEEDS_GP): Undef before redefining.
* config/alpha/netbsd.h: Likewise.
2000-05-27 Richard Henderson <rth@cygnus.com>
* config/alpha/elf.h (SELECT_SECTION): Mirror Kenner's May 19

11
gcc/config/alpha/alpha.c
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@ -4056,10 +4056,8 @@ alpha_does_function_need_gp ()
if (TARGET_WINDOWS_NT || TARGET_OPEN_VMS)
return 0;
#ifdef TARGET_PROFILING_NEEDS_GP
if (profile_flag)
if (TARGET_PROFILING_NEEDS_GP && profile_flag)
return 1;
#endif
#ifdef ASM_OUTPUT_MI_THUNK
if (current_function_is_thunk)
@ -4190,6 +4188,13 @@ alpha_expand_prologue ()
emit_insn (gen_prologue_ldgp ());
}
/* TARGET_PROFILING_NEEDS_GP actually implies that we need to insert
the call to mcount ourselves, rather than having the linker do it
magically in response to -pg. Since _mcount has special linkage,
don't represent the call as a call. */
if (TARGET_PROFILING_NEEDS_GP && profile_flag)
emit_insn (gen_prologue_mcount ());
/* Adjust the stack by the frame size. If the frame size is > 4096
bytes, we need to be sure we probe somewhere in the first and last
4096 bytes (we can probably get away without the latter test) and

3
gcc/config/alpha/alpha.h
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@ -185,6 +185,9 @@ extern enum alpha_fp_trap_mode alpha_fptm;
#ifndef TARGET_HAS_XFLOATING_LIBS
#define TARGET_HAS_XFLOATING_LIBS 0
#endif
#ifndef TARGET_PROFILING_NEEDS_GP
#define TARGET_PROFILING_NEEDS_GP 0
#endif
/* Macro to define tables used to set the flags.
This is a list in braces of pairs in braces,

14
gcc/config/alpha/alpha.md
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@ -41,6 +41,9 @@
;; 5 prologue_stack_probe_loop
;; 6 realign
;; 7 exception_receiver
;; 8 prologue_mcount
;; 9 prologue_ldgp_1
;; 10 prologue_ldgp_2
;; Processor type -- this attribute must exactly match the processor_type
;; enumeration in alpha.h.
@ -5613,6 +5616,17 @@
"! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
"")
;; The _mcount profiling hook has special calling conventions, and
;; does not clobber all the registers that a normal call would. So
;; hide the fact this is a call at all.
(define_insn "prologue_mcount"
[(unspec_volatile [(const_int 0)] 8)]
""
"lda $28,_mcount\;jsr $28,($28),_mcount"
[(set_attr "type" "multi")
(set_attr "length" "8")])
(define_insn "init_fp"
[(set (match_operand:DI 0 "register_operand" "=r")
(match_operand:DI 1 "register_operand" "r"))

5
gcc/config/alpha/linux.h
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@ -31,11 +31,8 @@ SUB_CPP_PREDEFINES
#undef LIB_SPEC
#define LIB_SPEC "%{pg:-lgmon} %{pg:-lc_p} %{!pg:-lc}"
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
fputs ("\tlda $28,_mcount\n\tjsr $28,($28),_mcount\n", (FILE))
/* Show that we need a GP when profiling. */
#undef TARGET_PROFILING_NEEDS_GP
#define TARGET_PROFILING_NEEDS_GP 1
/* Don't care about faults in the prologue. */

7
gcc/config/alpha/netbsd.h
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@ -28,9 +28,6 @@ Boston, MA 02111-1307, USA. */
#undef LIB_SPEC
#define LIB_SPEC "%{pg:-lgmon} %{pg:-lc_p} %{!pg:-lc}"
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
fputs ("\tlda $28,_mcount\n\tjsr $28,($28),_mcount\n", (FILE))
/* Show that we need a GP when profiling. */
#define TARGET_PROFILING_NEEDS_GP
#undef TARGET_PROFILING_NEEDS_GP
#define TARGET_PROFILING_NEEDS_GP 1