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gcc43
gcc43-x86_64-va_start.patch
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File gcc43-x86_64-va_start.patch of Package gcc43
2008-09-02 H.J. Lu <hongjiu.lu@intel.com> Jakub Jelinek <jakub@redhat.com> * config/i386/i386.c (X86_64_VARARGS_SIZE): Removed. (setup_incoming_varargs_64): Set/check ix86_varargs_gpr_size and ix86_varargs_fpr_size. Use ix86_varargs_gpr_size instead of REGPARM_MAX. Don't set ix86_save_varrargs_registers. (ix86_va_start): Check ix86_varargs_gpr_size and ix86_varargs_fpr_size instead of cfun->va_list_gpr_size and cfun->va_list_fpr_size, respectively. Subtract 8*REGPARM_MAX from frame pointer if ix86_varargs_gpr_size == 0. (ix86_compute_frame_layout): Updated. * config/i386/i386.h (ix86_save_varrargs_registers): Removed. (ix86_varargs_gpr_size): Define. (ix86_varargs_fpr_size): Likewise. (machine_function): Remove save_varrargs_registers. Add varargs_gpr_size and varargs_fpr_size. * gcc.target/i386/amd64-abi-3.c: New test. * gcc.target/i386/amd64-abi-4.c: Likewise. * gcc.target/i386/amd64-abi-5.c: Likewise. * gcc.target/i386/amd64-abi-6.c: Likewise. Index: gcc/config/i386/i386.h =================================================================== --- gcc/config/i386/i386.h.orig 2009-06-24 16:46:59.000000000 +0200 +++ gcc/config/i386/i386.h 2009-11-20 13:50:54.000000000 +0100 @@ -2441,7 +2441,8 @@ struct machine_function GTY(()) struct stack_local_entry *stack_locals; const char *some_ld_name; rtx force_align_arg_pointer; - int save_varrargs_registers; + int varargs_gpr_size; + int varargs_fpr_size; int accesses_prev_frame; int optimize_mode_switching[MAX_386_ENTITIES]; int needs_cld; @@ -2464,7 +2465,8 @@ struct machine_function GTY(()) }; #define ix86_stack_locals (cfun->machine->stack_locals) -#define ix86_save_varrargs_registers (cfun->machine->save_varrargs_registers) +#define ix86_varargs_gpr_size (cfun->machine->varargs_gpr_size) +#define ix86_varargs_fpr_size (cfun->machine->varargs_fpr_size) #define ix86_optimize_mode_switching (cfun->machine->optimize_mode_switching) #define ix86_current_function_needs_cld (cfun->machine->needs_cld) #define ix86_tls_descriptor_calls_expanded_in_cfun \ Index: gcc/config/i386/i386.c =================================================================== --- gcc/config/i386/i386.c.orig 2009-11-20 13:50:24.000000000 +0100 +++ gcc/config/i386/i386.c 2009-11-20 13:50:54.000000000 +0100 @@ -1616,9 +1616,6 @@ rtx ix86_compare_op0 = NULL_RTX; rtx ix86_compare_op1 = NULL_RTX; rtx ix86_compare_emitted = NULL_RTX; -/* Size of the register save area. */ -#define X86_64_VARARGS_SIZE (REGPARM_MAX * UNITS_PER_WORD + SSE_REGPARM_MAX * 16) - /* Define the structure for the machine field in struct function. */ struct stack_local_entry GTY(()) @@ -4999,11 +4996,22 @@ setup_incoming_varargs_64 (CUMULATIVE_AR alias_set_type set; int i; - if (! cfun->va_list_gpr_size && ! cfun->va_list_fpr_size) + /* GPR size of varargs save area. */ + if (cfun->va_list_gpr_size) + ix86_varargs_gpr_size = REGPARM_MAX * UNITS_PER_WORD; + else + ix86_varargs_gpr_size = 0; + + /* FPR size of varargs save area. We don't need it if we don't pass + anything in SSE registers. */ + if (cum->sse_nregs && cfun->va_list_fpr_size) + ix86_varargs_fpr_size = SSE_REGPARM_MAX * 16; + else + ix86_varargs_fpr_size = 0; + + if (! ix86_varargs_gpr_size && ! ix86_varargs_fpr_size) return; - /* Indicate to allocate space on the stack for varargs save area. */ - ix86_save_varrargs_registers = 1; /* We need 16-byte stack alignment to save SSE registers. If user asked for lower preferred_stack_boundary, lets just hope that he knows what he is doing and won't varargs SSE values. @@ -5029,7 +5037,7 @@ setup_incoming_varargs_64 (CUMULATIVE_AR x86_64_int_parameter_registers[i])); } - if (cum->sse_nregs && cfun->va_list_fpr_size) + if (ix86_varargs_fpr_size) { /* Now emit code to save SSE registers. The AX parameter contains number of SSE parameter registers used to call this function. We use @@ -5064,7 +5072,7 @@ setup_incoming_varargs_64 (CUMULATIVE_AR tmp_reg = gen_reg_rtx (Pmode); emit_insn (gen_rtx_SET (VOIDmode, tmp_reg, plus_constant (save_area, - 8 * REGPARM_MAX + 127))); + ix86_varargs_gpr_size + 127))); mem = gen_rtx_MEM (BLKmode, plus_constant (tmp_reg, -127)); MEM_NOTRAP_P (mem) = 1; set_mem_alias_set (mem, set); @@ -5168,7 +5176,7 @@ ix86_va_start (tree valist, rtx nextarg) expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); } - if (cfun->va_list_fpr_size) + if (TARGET_SSE && cfun->va_list_fpr_size) { type = TREE_TYPE (fpr); t = build2 (GIMPLE_MODIFY_STMT, type, fpr, @@ -5187,12 +5195,15 @@ ix86_va_start (tree valist, rtx nextarg) TREE_SIDE_EFFECTS (t) = 1; expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); - if (cfun->va_list_gpr_size || cfun->va_list_fpr_size) + if (ix86_varargs_gpr_size || ix86_varargs_fpr_size) { /* Find the register save area. Prologue of the function save it right above stack frame. */ type = TREE_TYPE (sav); t = make_tree (type, frame_pointer_rtx); + if (!ix86_varargs_gpr_size) + t = build2 (POINTER_PLUS_EXPR, type, t, + size_int (-8 * REGPARM_MAX)); t = build2 (GIMPLE_MODIFY_STMT, type, sav, t); TREE_SIDE_EFFECTS (t) = 1; expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL); @@ -6104,13 +6115,8 @@ ix86_compute_frame_layout (struct ix86_f offset += frame->nregs * UNITS_PER_WORD; /* Va-arg area */ - if (ix86_save_varrargs_registers) - { - offset += X86_64_VARARGS_SIZE; - frame->va_arg_size = X86_64_VARARGS_SIZE; - } - else - frame->va_arg_size = 0; + frame->va_arg_size = ix86_varargs_gpr_size + ix86_varargs_fpr_size; + offset += frame->va_arg_size; /* Align start of frame for local function. */ frame->padding1 = ((offset + stack_alignment_needed - 1) Index: gcc/testsuite/gcc.target/i386/amd64-abi-3.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc/testsuite/gcc.target/i386/amd64-abi-3.c 2009-11-20 13:50:54.000000000 +0100 @@ -0,0 +1,18 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target lp64 } */ +/* { dg-options "-O2 -mno-sse" } */ +/* { dg-final { scan-assembler "subq\[\\t \]*\\\$88,\[\\t \]*%rsp" } } */ +/* { dg-final { scan-assembler-not "subq\[\\t \]*\\\$216,\[\\t \]*%rsp" } } */ + +#include <stdarg.h> + +void foo (va_list va_arglist); + +void +test (int a1, ...) +{ + va_list va_arglist; + va_start (va_arglist, a1); + foo (va_arglist); + va_end (va_arglist); +} Index: gcc/testsuite/gcc.target/i386/amd64-abi-5.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc/testsuite/gcc.target/i386/amd64-abi-5.c 2009-11-20 13:50:54.000000000 +0100 @@ -0,0 +1,64 @@ +/* { dg-do run } */ +/* { dg-require-effective-target lp64 } */ +/* { dg-options "-O2" } */ + +#include <stdarg.h> +#include <assert.h> + +int n1 = 30; +double n2 = 324; +double n3 = 39494.94; +double n4 = 407; +double n5 = 32.304; +double n6 = 394.14; +double n7 = 4.07; +double n8 = 32.4; +double n9 = 314.194; +double n10 = 0.1407; + +int e1; +double e2; +double e3; +double e4; +double e5; +double e6; +double e7; +double e8; +double e9; +double e10; + +static void +__attribute__((noinline)) +test (int a1, ...) +{ + e1 = a1; + va_list va_arglist; + va_start (va_arglist, a1); + e2 = va_arg (va_arglist, double); + e3 = va_arg (va_arglist, double); + e4 = va_arg (va_arglist, double); + e5 = va_arg (va_arglist, double); + e6 = va_arg (va_arglist, double); + e7 = va_arg (va_arglist, double); + e8 = va_arg (va_arglist, double); + e9 = va_arg (va_arglist, double); + e10 = va_arg (va_arglist, double); + va_end (va_arglist); +} + +int +main () +{ + test (n1, n2, n3, n4, n5, n6, n7, n8, n9, n10); + assert (n1 == e1); + assert (n2 == e2); + assert (n3 == e3); + assert (n4 == e4); + assert (n5 == e5); + assert (n6 == e6); + assert (n7 == e7); + assert (n8 == e8); + assert (n9 == e9); + assert (n10 == e10); + return 0; +} Index: gcc/testsuite/gcc.target/i386/amd64-abi-4.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc/testsuite/gcc.target/i386/amd64-abi-4.c 2009-11-20 13:50:54.000000000 +0100 @@ -0,0 +1,47 @@ +/* { dg-do run } */ +/* { dg-require-effective-target lp64 } */ +/* { dg-options "-O2 -mno-sse" } */ + +#include <stdarg.h> +#include <assert.h> + +int n1 = 30; +int n2 = 324; +void *n3 = (void *) &n2; +int n4 = 407; + +int e1; +int e2; +void *e3; +int e4; + +static void +__attribute__((noinline)) +foo (va_list va_arglist) +{ + e2 = va_arg (va_arglist, int); + e3 = va_arg (va_arglist, void *); + e4 = va_arg (va_arglist, int); +} + +static void +__attribute__((noinline)) +test (int a1, ...) +{ + e1 = a1; + va_list va_arglist; + va_start (va_arglist, a1); + foo (va_arglist); + va_end (va_arglist); +} + +int +main () +{ + test (n1, n2, n3, n4); + assert (n1 == e1); + assert (n2 == e2); + assert (n3 == e3); + assert (n4 == e4); + return 0; +} Index: gcc/testsuite/gcc.target/i386/amd64-abi-6.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc/testsuite/gcc.target/i386/amd64-abi-6.c 2009-11-20 13:50:54.000000000 +0100 @@ -0,0 +1,71 @@ +/* { dg-do run } */ +/* { dg-require-effective-target lp64 } */ +/* { dg-options "-O2" } */ + +#include <stdarg.h> +#include <assert.h> + +int n1 = 30; +double n2 = 324; +double n3 = 39494.94; +double n4 = 407; +double n5 = 32.304; +double n6 = 394.14; +double n7 = 4.07; +double n8 = 32.4; +double n9 = 314.194; +double n10 = 0.1407; + +int e1; +double e2; +double e3; +double e4; +double e5; +double e6; +double e7; +double e8; +double e9; +double e10; + +static void +__attribute__((noinline)) +foo (va_list va_arglist) +{ + e2 = va_arg (va_arglist, double); + e3 = va_arg (va_arglist, double); + e4 = va_arg (va_arglist, double); + e5 = va_arg (va_arglist, double); + e6 = va_arg (va_arglist, double); + e7 = va_arg (va_arglist, double); + e8 = va_arg (va_arglist, double); + e9 = va_arg (va_arglist, double); + e10 = va_arg (va_arglist, double); +} + +static void +__attribute__((noinline)) +test (int a1, ...) +{ + va_list va_arglist; + e1 = a1; + va_start (va_arglist, a1); + foo (va_arglist); + va_end (va_arglist); +} + +int +main () +{ + test (n1, n2, n3, n4, n5, n6, n7, n8, n9, n10); + assert (n1 == e1); + assert (n2 == e2); + assert (n3 == e3); + assert (n4 == e4); + assert (n5 == e5); + assert (n6 == e6); + assert (n7 == e7); + assert (n8 == e8); + assert (n9 == e9); + assert (n10 == e10); + return 0; +}
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