From 67cef334cce4159cc4de8543ffcc399bfb6c94be Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Fri, 27 Sep 2002 03:08:38 +0000 Subject: [PATCH] dbxout.c (FORCE_TEXT): Switch to current_function_decl, not text_section. 2002-09-26 David Edelsohn * dbxout.c (FORCE_TEXT): Switch to current_function_decl, not text_section. * xcoffout.h (DBX_STATIC_BLOCK_START): Remove explicit change to text section. * config/rs6000/rs6000.c (rs6000_override_options): Allow function-sections and data-sections functionality on AIX. 2002-09-26 David Edelsohn Dale Johannesen * config/rs6000/rs6000.c (rs6000_emit_move): Insert zero-extend in RTL for sub-word loads from memory. Co-Authored-By: Dale Johannesen From-SVN: r57572 --- gcc/ChangeLog | 15 +++++++++++++++ gcc/config/rs6000/rs6000.c | 33 ++++++++++++++++----------------- gcc/dbxout.c | 2 +- gcc/xcoffout.h | 20 ++------------------ 4 files changed, 34 insertions(+), 36 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f836df4cf54..2212bac341c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,18 @@ +2002-09-26 David Edelsohn + + * dbxout.c (FORCE_TEXT): Switch to current_function_decl, not + text_section. + * xcoffout.h (DBX_STATIC_BLOCK_START): Remove explicit change to + text section. + * config/rs6000/rs6000.c (rs6000_override_options): Allow + function-sections and data-sections functionality on AIX. + +2002-09-26 David Edelsohn + Dale Johannesen + + * config/rs6000/rs6000.c (rs6000_emit_move): Insert zero-extend + in RTL for sub-word loads from memory. + 2002-09-26 Richard Henderson PR c/7160 diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 4cb67f645d0..171e557b0fe 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -590,21 +590,6 @@ rs6000_override_options (default_cpu) flag_pic = 0; } -#ifdef XCOFF_DEBUGGING_INFO - if (flag_function_sections && (write_symbols != NO_DEBUG) - && DEFAULT_ABI == ABI_AIX) - { - warning ("-ffunction-sections disabled on AIX when debugging"); - flag_function_sections = 0; - } - - if (flag_data_sections && (DEFAULT_ABI == ABI_AIX)) - { - warning ("-fdata-sections not supported on AIX"); - flag_data_sections = 0; - } -#endif - /* For Darwin, always silently make -fpic and -fPIC identical. */ if (flag_pic == 1 && DEFAULT_ABI == ABI_DARWIN) flag_pic = 2; @@ -2579,8 +2564,22 @@ rs6000_emit_move (dest, source, mode) return; } - if (! no_new_pseudos && GET_CODE (operands[0]) != REG) - operands[1] = force_reg (mode, operands[1]); + if (!no_new_pseudos) + { + if (GET_CODE (operands[1]) == MEM && optimize > 0 + && (mode == QImode || mode == HImode || mode == SImode) + && GET_MODE_SIZE (mode) < GET_MODE_SIZE (word_mode)) + { + rtx reg = gen_reg_rtx (word_mode); + + emit_insn (gen_rtx_SET (word_mode, reg, + gen_rtx_ZERO_EXTEND (word_mode, + operands[1]))); + operands[1] = gen_lowpart (mode, reg); + } + if (GET_CODE (operands[0]) != REG) + operands[1] = force_reg (mode, operands[1]); + } if (mode == SFmode && ! TARGET_POWERPC && TARGET_HARD_FLOAT && TARGET_FPRS diff --git a/gcc/dbxout.c b/gcc/dbxout.c index 18d61eb19a5..9d27fa7c72a 100644 --- a/gcc/dbxout.c +++ b/gcc/dbxout.c @@ -155,7 +155,7 @@ static int source_label_number = 1; #endif #ifdef DEBUG_SYMS_TEXT -#define FORCE_TEXT text_section (); +#define FORCE_TEXT function_section (current_function_decl); #else #define FORCE_TEXT #endif diff --git a/gcc/xcoffout.h b/gcc/xcoffout.h index afa7274dcc2..dd630c93749 100644 --- a/gcc/xcoffout.h +++ b/gcc/xcoffout.h @@ -47,30 +47,14 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #define DBX_STATIC_CONST_VAR_CODE N_STSYM -/* For static variables, output code to define the start of a static block. - - ??? The IBM rs6000/AIX assembler has a bug that causes bss block debug - info to be occasionally lost. A simple example is this: - int a; static int b; - The commands `gcc -g -c tmp.c; dump -t tmp.o' gives -[10] m 0x00000016 1 0 0x8f 0x0000 .bs -[11] m 0x00000000 1 0 0x90 0x0000 .es -... -[21] m 0x00000000 -2 0 0x85 0x0000 b:S-1 - which is wrong. The `b:S-1' must be between the `.bs' and `.es'. - We can apparently work around the problem by forcing the text section - (even if we are already in the text section) immediately before outputting - the `.bs'. This should be fixed in the next major AIX release (3.3?). */ +/* For static variables, output code to define the start of a static block. */ #define DBX_STATIC_BLOCK_START(ASMFILE,CODE) \ { \ if ((CODE) == N_STSYM) \ fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\ else if ((CODE) == N_LCSYM) \ - { \ - fprintf ((ASMFILE), "%s\n", TEXT_SECTION_ASM_OP); \ - fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ - } \ + fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name); \ } /* For static variables, output code to define the end of a static block. */ -- 2.30.2