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Most x86-64 tests now work; only on error in test1-3. 

I've had to introduce the XMM1 register to get the calling convention
to work properly, unfortunately this has broken a fair bit of code
which assumes that only XMM0 is used.
master
James Lyon 2013-04-19 15:33:16 +01:00
parent b961ba5396
commit 0e17671f72
3 changed files with 129 additions and 67 deletions
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69
tccgen.c
View File

@ -88,7 +88,7 @@ ST_INLN int is_float(int t)
{ {
int bt; int bt;
bt = t & VT_BTYPE; bt = t & VT_BTYPE;
return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT; return bt == VT_LDOUBLE || bt == VT_DOUBLE || bt == VT_FLOAT || bt == VT_QFLOAT;
} }
/* we use our own 'finite' function to avoid potential problems with /* we use our own 'finite' function to avoid potential problems with
@ -688,9 +688,7 @@ static void gbound(void)
ST_FUNC int gv(int rc) ST_FUNC int gv(int rc)
{ {
int r, bit_pos, bit_size, size, align, i; int r, bit_pos, bit_size, size, align, i;
#ifndef TCC_TARGET_X86_64
int rc2; int rc2;
#endif
/* NOTE: get_reg can modify vstack[] */ /* NOTE: get_reg can modify vstack[] */
if (vtop->type.t & VT_BITFIELD) { if (vtop->type.t & VT_BITFIELD) {
@ -765,11 +763,14 @@ ST_FUNC int gv(int rc)
#endif #endif
r = vtop->r & VT_VALMASK; r = vtop->r & VT_VALMASK;
#ifndef TCC_TARGET_X86_64
rc2 = RC_INT; rc2 = RC_INT;
if (rc == RC_IRET) if (rc == RC_IRET)
rc2 = RC_LRET; rc2 = RC_LRET;
#ifdef TCC_TARGET_X86_64
else if (rc == RC_FRET)
rc2 = RC_QRET;
#endif #endif
/* need to reload if: /* need to reload if:
- constant - constant
- lvalue (need to dereference pointer) - lvalue (need to dereference pointer)
@ -777,18 +778,25 @@ ST_FUNC int gv(int rc)
if (r >= VT_CONST if (r >= VT_CONST
|| (vtop->r & VT_LVAL) || (vtop->r & VT_LVAL)
|| !(reg_classes[r] & rc) || !(reg_classes[r] & rc)
#ifndef TCC_TARGET_X86_64 #ifdef TCC_TARGET_X86_64
|| ((vtop->type.t & VT_BTYPE) == VT_QLONG && !(reg_classes[vtop->r2] & rc2))
|| ((vtop->type.t & VT_BTYPE) == VT_QFLOAT && !(reg_classes[vtop->r2] & rc2))
#else
|| ((vtop->type.t & VT_BTYPE) == VT_LLONG && !(reg_classes[vtop->r2] & rc2)) || ((vtop->type.t & VT_BTYPE) == VT_LLONG && !(reg_classes[vtop->r2] & rc2))
#endif #endif
) )
{ {
r = get_reg(rc); r = get_reg(rc);
#ifndef TCC_TARGET_X86_64 #ifdef TCC_TARGET_X86_64
if (((vtop->type.t & VT_BTYPE) == VT_QLONG) || ((vtop->type.t & VT_BTYPE) == VT_QFLOAT)) {
#else
if ((vtop->type.t & VT_BTYPE) == VT_LLONG) { if ((vtop->type.t & VT_BTYPE) == VT_LLONG) {
#endif
int r2; int r2;
unsigned long long ll; unsigned long long ll;
/* two register type load : expand to two words /* two register type load : expand to two words
temporarily */ temporarily */
#ifndef TCC_TARGET_X86_64
if ((vtop->r & (VT_VALMASK | VT_LVAL)) == VT_CONST) { if ((vtop->r & (VT_VALMASK | VT_LVAL)) == VT_CONST) {
/* load constant */ /* load constant */
ll = vtop->c.ull; ll = vtop->c.ull;
@ -796,23 +804,32 @@ ST_FUNC int gv(int rc)
load(r, vtop); load(r, vtop);
vtop->r = r; /* save register value */ vtop->r = r; /* save register value */
vpushi(ll >> 32); /* second word */ vpushi(ll >> 32); /* second word */
} else if (r >= VT_CONST || /* XXX: test to VT_CONST incorrect ? */ } else
#endif
if (r >= VT_CONST || /* XXX: test to VT_CONST incorrect ? */
(vtop->r & VT_LVAL)) { (vtop->r & VT_LVAL)) {
#ifdef TCC_TARGET_X86_64
int addr_type = VT_LLONG, load_size = 8, load_type = ((vtop->type.t & VT_BTYPE) == VT_QLONG) ? VT_LLONG : VT_DOUBLE;
#else
int addr_type = VT_INT, load_size = 4, load_type = VT_INT;
#endif
/* We do not want to modifier the long long /* We do not want to modifier the long long
pointer here, so the safest (and less pointer here, so the safest (and less
efficient) is to save all the other registers efficient) is to save all the other registers
in the stack. XXX: totally inefficient. */ in the stack. XXX: totally inefficient. */
save_regs(1); save_regs(1);
/* load from memory */ /* load from memory */
vtop->type.t = load_type;
load(r, vtop); load(r, vtop);
vdup(); vdup();
vtop[-1].r = r; /* save register value */ vtop[-1].r = r; /* save register value */
/* increment pointer to get second word */ /* increment pointer to get second word */
vtop->type.t = VT_INT; vtop->type.t = addr_type;
gaddrof(); gaddrof();
vpushi(4); vpushi(load_size);
gen_op('+'); gen_op('+');
vtop->r |= VT_LVAL; vtop->r |= VT_LVAL;
vtop->type.t = load_type;
} else { } else {
/* move registers */ /* move registers */
load(r, vtop); load(r, vtop);
@ -827,9 +844,7 @@ ST_FUNC int gv(int rc)
vpop(); vpop();
/* write second register */ /* write second register */
vtop->r2 = r2; vtop->r2 = r2;
} else } else if ((vtop->r & VT_LVAL) && !is_float(vtop->type.t)) {
#endif
if ((vtop->r & VT_LVAL) && !is_float(vtop->type.t)) {
int t1, t; int t1, t;
/* lvalue of scalar type : need to use lvalue type /* lvalue of scalar type : need to use lvalue type
because of possible cast */ because of possible cast */
@ -2479,6 +2494,8 @@ ST_FUNC void vstore(void)
#ifdef TCC_TARGET_X86_64 #ifdef TCC_TARGET_X86_64
if ((ft & VT_BTYPE) == VT_LDOUBLE) { if ((ft & VT_BTYPE) == VT_LDOUBLE) {
rc = RC_ST0; rc = RC_ST0;
} else if ((ft & VT_BTYPE) == VT_QFLOAT) {
rc = RC_FRET;
} }
#endif #endif
} }
@ -2497,29 +2514,29 @@ ST_FUNC void vstore(void)
load(t, &sv); load(t, &sv);
vtop[-1].r = t | VT_LVAL; vtop[-1].r = t | VT_LVAL;
} }
store(r, vtop - 1);
/* two word case handling : store second register at word + 4 (or +8 for x86-64) */ /* two word case handling : store second register at word + 4 (or +8 for x86-64) */
#ifdef TCC_TARGET_X86_64 #ifdef TCC_TARGET_X86_64
if ((ft & VT_BTYPE) == VT_QLONG) { if (((ft & VT_BTYPE) == VT_QLONG) || ((ft & VT_BTYPE) == VT_QFLOAT)) {
int addr_type = VT_LLONG, load_size = 8, load_type = ((vtop->type.t & VT_BTYPE) == VT_QLONG) ? VT_LLONG : VT_DOUBLE;
#else #else
if ((ft & VT_BTYPE) == VT_LLONG) { if ((ft & VT_BTYPE) == VT_LLONG) {
int addr_type = VT_INT, load_size = 4, load_type = VT_INT;
#endif #endif
vtop[-1].type.t = load_type;
store(r, vtop - 1);
vswap(); vswap();
/* convert to int to increment easily */ /* convert to int to increment easily */
#ifdef TCC_TARGET_X86_64 vtop->type.t = addr_type;
vtop->type.t = VT_LLONG;
gaddrof(); gaddrof();
vpushi(8); vpushi(load_size);
#else
vtop->type.t = VT_INT;
gaddrof();
vpushi(4);
#endif
gen_op('+'); gen_op('+');
vtop->r |= VT_LVAL; vtop->r |= VT_LVAL;
vswap(); vswap();
vtop[-1].type.t = load_type;
/* XXX: it works because r2 is spilled last ! */ /* XXX: it works because r2 is spilled last ! */
store(vtop->r2, vtop - 1); store(vtop->r2, vtop - 1);
} else {
store(r, vtop - 1);
} }
} }
vswap(); vswap();
@ -3897,8 +3914,16 @@ ST_FUNC void unary(void)
/* return in register */ /* return in register */
if (is_float(ret.type.t)) { if (is_float(ret.type.t)) {
ret.r = reg_fret(ret.type.t); ret.r = reg_fret(ret.type.t);
#ifdef TCC_TARGET_X86_64
if ((ret.type.t & VT_BTYPE) == VT_QFLOAT)
ret.r2 = REG_QRET;
#endif
} else { } else {
#ifdef TCC_TARGET_X86_64
if ((ret.type.t & VT_BTYPE) == VT_QLONG)
#else
if ((ret.type.t & VT_BTYPE) == VT_LLONG) if ((ret.type.t & VT_BTYPE) == VT_LLONG)
#endif
ret.r2 = REG_LRET; ret.r2 = REG_LRET;
ret.r = REG_IRET; ret.r = REG_IRET;
} }

4
tests/abitest.c
View File

@ -88,8 +88,8 @@ static int ret_2float_test(void) {
/* /*
* ret_2double_test: * ret_2double_test:
* *
* On x86-64, a struct with 2 doubles should be packed into a single * On x86-64, a struct with 2 doubles should be passed in two SSE
* SSE register (this tests VT_QFLOAT). * registers.
*/ */
typedef struct ret_2double_test_type_s {double x, y;} ret_2double_test_type; typedef struct ret_2double_test_type_s {double x, y;} ret_2double_test_type;
typedef ret_2double_test_type (*ret_2double_test_function_type) (ret_2double_test_type); typedef ret_2double_test_type (*ret_2double_test_function_type) (ret_2double_test_type);

123
x86_64-gen.c
View File

@ -23,7 +23,7 @@
#ifdef TARGET_DEFS_ONLY #ifdef TARGET_DEFS_ONLY
/* number of available registers */ /* number of available registers */
#define NB_REGS 5 #define NB_REGS 6
#define NB_ASM_REGS 8 #define NB_ASM_REGS 8
/* a register can belong to several classes. The classes must be /* a register can belong to several classes. The classes must be
@ -39,10 +39,12 @@
#define RC_R10 0x0400 #define RC_R10 0x0400
#define RC_R11 0x0800 #define RC_R11 0x0800
#define RC_XMM0 0x0020 #define RC_XMM0 0x0020
#define RC_ST0 0x0040 /* only for long double */ #define RC_XMM1 0x0040
#define RC_ST0 0x0080 /* only for long double */
#define RC_IRET RC_RAX /* function return: integer register */ #define RC_IRET RC_RAX /* function return: integer register */
#define RC_LRET RC_RDX /* function return: second integer register */ #define RC_LRET RC_RDX /* function return: second integer register */
#define RC_FRET RC_XMM0 /* function return: float register */ #define RC_FRET RC_XMM0 /* function return: float register */
#define RC_QRET RC_XMM1 /* function return: second float register */
/* pretty names for the registers */ /* pretty names for the registers */
enum { enum {
@ -50,7 +52,8 @@ enum {
TREG_RCX = 1, TREG_RCX = 1,
TREG_RDX = 2, TREG_RDX = 2,
TREG_XMM0 = 3, TREG_XMM0 = 3,
TREG_ST0 = 4, TREG_XMM1 = 4,
TREG_ST0 = 5,
TREG_RSI = 6, TREG_RSI = 6,
TREG_RDI = 7, TREG_RDI = 7,
@ -70,6 +73,7 @@ enum {
#define REG_IRET TREG_RAX /* single word int return register */ #define REG_IRET TREG_RAX /* single word int return register */
#define REG_LRET TREG_RDX /* second word return register (for long long) */ #define REG_LRET TREG_RDX /* second word return register (for long long) */
#define REG_FRET TREG_XMM0 /* float return register */ #define REG_FRET TREG_XMM0 /* float return register */
#define REG_QRET TREG_XMM1 /* second float return register */
/* defined if function parameters must be evaluated in reverse order */ /* defined if function parameters must be evaluated in reverse order */
#define INVERT_FUNC_PARAMS #define INVERT_FUNC_PARAMS
@ -108,6 +112,7 @@ ST_DATA const int reg_classes[NB_REGS+7] = {
/* ecx */ RC_INT | RC_RCX, /* ecx */ RC_INT | RC_RCX,
/* edx */ RC_INT | RC_RDX, /* edx */ RC_INT | RC_RDX,
/* xmm0 */ RC_FLOAT | RC_XMM0, /* xmm0 */ RC_FLOAT | RC_XMM0,
/* xmm1 */ RC_FLOAT | RC_XMM1,
/* st0 */ RC_ST0, /* st0 */ RC_ST0,
0, 0,
0, 0,
@ -375,7 +380,8 @@ void load(int r, SValue *sv)
if ((ft & VT_BTYPE) == VT_FLOAT) { if ((ft & VT_BTYPE) == VT_FLOAT) {
b = 0x6e0f66, r = 0; /* movd */ b = 0x6e0f66, r = 0; /* movd */
} else if ((ft & VT_BTYPE) == VT_DOUBLE) { } else if ((ft & VT_BTYPE) == VT_DOUBLE) {
b = 0x7e0ff3, r = 0; /* movq */ b = 0x7e0ff3; /* movq */
r -= TREG_XMM0;
} else if ((ft & VT_BTYPE) == VT_LDOUBLE) { } else if ((ft & VT_BTYPE) == VT_LDOUBLE) {
b = 0xdb, r = 5; /* fldt */ b = 0xdb, r = 5; /* fldt */
} else if ((ft & VT_TYPE) == VT_BYTE) { } else if ((ft & VT_TYPE) == VT_BYTE) {
@ -387,6 +393,9 @@ void load(int r, SValue *sv)
} else if ((ft & VT_TYPE) == (VT_SHORT | VT_UNSIGNED)) { } else if ((ft & VT_TYPE) == (VT_SHORT | VT_UNSIGNED)) {
b = 0xb70f; /* movzwl */ b = 0xb70f; /* movzwl */
} else { } else {
assert(((ft & VT_BTYPE) == VT_INT) || ((ft & VT_BTYPE) == VT_LLONG)
|| ((ft & VT_BTYPE) == VT_PTR) || ((ft & VT_BTYPE) == VT_ENUM)
|| ((ft & VT_BTYPE) == VT_FUNC));
ll = is64_type(ft); ll = is64_type(ft);
b = 0x8b; b = 0x8b;
} }
@ -450,18 +459,30 @@ void load(int r, SValue *sv)
orex(0,r,0,0); orex(0,r,0,0);
oad(0xb8 + REG_VALUE(r), t ^ 1); /* mov $0, r */ oad(0xb8 + REG_VALUE(r), t ^ 1); /* mov $0, r */
} else if (v != r) { } else if (v != r) {
if (r == TREG_XMM0) { if ((r == TREG_XMM0) || (r == TREG_XMM1)) {
assert(v == TREG_ST0); if (v == TREG_ST0) {
/* gen_cvt_ftof(VT_DOUBLE); */ /* gen_cvt_ftof(VT_DOUBLE); */
o(0xf0245cdd); /* fstpl -0x10(%rsp) */ o(0xf0245cdd); /* fstpl -0x10(%rsp) */
/* movsd -0x10(%rsp),%xmm0 */ /* movsd -0x10(%rsp),%xmmN */
o(0x44100ff2); o(0x100ff2);
o(0xf024); o(0x44 + ((r - TREG_XMM0) << 3)); /* %xmmN */
o(0xf024);
} else {
assert((v == TREG_XMM0) || (v == TREG_XMM1));
if ((ft & VT_BTYPE) == VT_FLOAT) {
o(0x100ff3);
} else {
assert((ft & VT_BTYPE) == VT_DOUBLE);
o(0x100ff2);
}
o(0xc0 + (v - TREG_XMM0) + ((r - TREG_XMM0) << 3));
}
} else if (r == TREG_ST0) { } else if (r == TREG_ST0) {
assert(v == TREG_XMM0); assert((v == TREG_XMM0) || (v == TREG_XMM1));
/* gen_cvt_ftof(VT_LDOUBLE); */ /* gen_cvt_ftof(VT_LDOUBLE); */
/* movsd %xmm0,-0x10(%rsp) */ /* movsd %xmm0,-0x10(%rsp) */
o(0x44110ff2); o(0x110ff2);
o(0x44 + ((r - TREG_XMM0) << 3)); /* %xmmN */
o(0xf024); o(0xf024);
o(0xf02444dd); /* fldl -0x10(%rsp) */ o(0xf02444dd); /* fldl -0x10(%rsp) */
} else { } else {
@ -510,7 +531,7 @@ void store(int r, SValue *v)
o(0x66); o(0x66);
o(pic); o(pic);
o(0xd60f); /* movq */ o(0xd60f); /* movq */
r = 0; r -= TREG_XMM0;
} else if (bt == VT_LDOUBLE) { } else if (bt == VT_LDOUBLE) {
o(0xc0d9); /* fld %st(0) */ o(0xc0d9); /* fld %st(0) */
o(pic); o(pic);
@ -679,7 +700,7 @@ void gfunc_call(int nb_args)
struct_size += size; struct_size += size;
} else if (is_sse_float(vtop->type.t)) { } else if (is_sse_float(vtop->type.t)) {
gv(RC_FLOAT); /* only one float register */ gv(RC_XMM0); /* only one float register */
j = --gen_reg; j = --gen_reg;
if (j >= REGN) { if (j >= REGN) {
/* movq %xmm0, j*8(%rsp) */ /* movq %xmm0, j*8(%rsp) */
@ -861,6 +882,7 @@ static X86_64_Mode classify_x86_64_inner(CType *ty) {
case VT_LLONG: case VT_LLONG:
case VT_BOOL: case VT_BOOL:
case VT_PTR: case VT_PTR:
case VT_FUNC:
case VT_ENUM: return x86_64_mode_integer; case VT_ENUM: return x86_64_mode_integer;
case VT_FLOAT: case VT_FLOAT:
@ -881,6 +903,8 @@ static X86_64_Mode classify_x86_64_inner(CType *ty) {
return mode; return mode;
} }
assert(0);
} }
static X86_64_Mode classify_x86_64_arg(CType *ty, CType *ret, int *psize, int *reg_count) { static X86_64_Mode classify_x86_64_arg(CType *ty, CType *ret, int *psize, int *reg_count) {
@ -963,6 +987,14 @@ static const uint8_t arg_regs[REGN] = {
TREG_RDI, TREG_RSI, TREG_RDX, TREG_RCX, TREG_R8, TREG_R9 TREG_RDI, TREG_RSI, TREG_RDX, TREG_RCX, TREG_R8, TREG_R9
}; };
static int arg_prepare_reg(int idx) {
if (idx == 2 || idx == 3)
/* idx=2: r10, idx=3: r11 */
return idx + 8;
else
return arg_regs[idx];
}
/* Generate function call. The function address is pushed first, then /* Generate function call. The function address is pushed first, then
all the parameters in call order. This functions pops all the all the parameters in call order. This functions pops all the
parameters and the function address. */ parameters and the function address. */
@ -1051,7 +1083,7 @@ void gfunc_call(int nb_args)
case x86_64_mode_sse: case x86_64_mode_sse:
if (sse_reg > 8) { if (sse_reg > 8) {
gv(RC_FLOAT); gv(RC_XMM0);
o(0x50); /* push $rax */ o(0x50); /* push $rax */
/* movq %xmm0, (%rsp) */ /* movq %xmm0, (%rsp) */
o(0x04d60f66); o(0x04d60f66);
@ -1097,15 +1129,18 @@ void gfunc_call(int nb_args)
break; break;
case x86_64_mode_sse: case x86_64_mode_sse:
if (sse_reg > 8) { sse_reg -= reg_count;
sse_reg -= reg_count; if (sse_reg + reg_count <= 8) {
} else { gv(RC_XMM0); /* only one float register */
for (j = 0; j < reg_count; ++j) { if (sse_reg) { /* avoid redundant movaps %xmm0, %xmm0 */
--sse_reg;
gv(RC_FLOAT); /* only one float register */
/* movaps %xmm0, %xmmN */ /* movaps %xmm0, %xmmN */
o(0x280f); o(0x280f);
o(0xc0 + (sse_reg << 3)); o(0xc0 + (sse_reg << 3));
if (reg_count == 2) {
/* movaps %xmm1, %xmmN */
o(0x280f);
o(0xc1 + ((sse_reg+1) << 3));
}
} }
} }
break; break;
@ -1113,16 +1148,17 @@ void gfunc_call(int nb_args)
case x86_64_mode_integer: case x86_64_mode_integer:
/* simple type */ /* simple type */
/* XXX: implicit cast ? */ /* XXX: implicit cast ? */
if (gen_reg > 8) { gen_reg -= reg_count;
gen_reg -= reg_count; if (gen_reg + reg_count <= REGN) {
} else { r = gv((reg_count == 1) ? RC_INT : RC_IRET);
for (j = 0; j < reg_count; ++j) { int d = arg_prepare_reg(gen_reg);
--gen_reg; orex(1,d,r,0x89); /* mov */
int d = arg_regs[gen_reg]; o(0xc0 + REG_VALUE(r) * 8 + REG_VALUE(d));
r = gv(RC_INT); if (reg_count == 2) {
if (gen_reg == 2 || gen_reg == 3) /* Second word of two-word value should always be in rdx
/* gen_reg=2: r10, gen_reg=3: r11 */ this case is handled via RC_IRET */
d = gen_reg + 8; r = TREG_RDX;
d = arg_prepare_reg(gen_reg+1);
orex(1,d,r,0x89); /* mov */ orex(1,d,r,0x89); /* mov */
o(0xc0 + REG_VALUE(r) * 8 + REG_VALUE(d)); o(0xc0 + REG_VALUE(r) * 8 + REG_VALUE(d));
} }
@ -1263,13 +1299,13 @@ void gfunc_prolog(CType *func_type)
case x86_64_mode_sse: case x86_64_mode_sse:
if (sse_param_index + reg_count <= 8) { if (sse_param_index + reg_count <= 8) {
/* save arguments passed by register */ /* save arguments passed by register */
loc -= reg_count * 8;
param_addr = loc;
for (i = 0; i < reg_count; ++i) { for (i = 0; i < reg_count; ++i) {
loc -= 8;
o(0xd60f66); /* movq */ o(0xd60f66); /* movq */
gen_modrm(sse_param_index, VT_LOCAL, NULL, loc); gen_modrm(sse_param_index, VT_LOCAL, NULL, param_addr + i*8);
++sse_param_index; ++sse_param_index;
} }
param_addr = loc;
} else { } else {
param_addr = addr; param_addr = addr;
addr += size; addr += size;
@ -1286,11 +1322,12 @@ void gfunc_prolog(CType *func_type)
case x86_64_mode_integer: { case x86_64_mode_integer: {
if (reg_param_index + reg_count <= REGN) { if (reg_param_index + reg_count <= REGN) {
/* save arguments passed by register */ /* save arguments passed by register */
loc -= reg_count * 8;
param_addr = loc;
for (i = 0; i < reg_count; ++i) { for (i = 0; i < reg_count; ++i) {
push_arg_reg(reg_param_index); gen_modrm64(0x89, arg_regs[reg_param_index], VT_LOCAL, NULL, param_addr + i*8);
++reg_param_index; ++reg_param_index;
} }
param_addr = loc;
} else { } else {
param_addr = addr; param_addr = addr;
addr += size; addr += size;
@ -1547,12 +1584,12 @@ void gen_opl(int op)
/* generate a floating point operation 'v = t1 op t2' instruction. The /* generate a floating point operation 'v = t1 op t2' instruction. The
two operands are guaranted to have the same floating point type */ two operands are guaranted to have the same floating point type */
/* XXX: need to use ST1 too */ /* XXX: need to use ST1 and XMM1 too */
void gen_opf(int op) void gen_opf(int op)
{ {
int a, ft, fc, swapped, r; int a, ft, fc, swapped, r;
int float_type = int float_type =
(vtop->type.t & VT_BTYPE) == VT_LDOUBLE ? RC_ST0 : RC_FLOAT; (vtop->type.t & VT_BTYPE) == VT_LDOUBLE ? RC_ST0 : RC_XMM0; /* to avoid xmm1 handling for now */
/* convert constants to memory references */ /* convert constants to memory references */
if ((vtop[-1].r & (VT_VALMASK | VT_LVAL)) == VT_CONST) { if ((vtop[-1].r & (VT_VALMASK | VT_LVAL)) == VT_CONST) {
@ -1803,9 +1840,9 @@ void gen_cvt_ftof(int t)
ft = vtop->type.t; ft = vtop->type.t;
bt = ft & VT_BTYPE; bt = ft & VT_BTYPE;
tbt = t & VT_BTYPE; tbt = t & VT_BTYPE;
if (bt == VT_FLOAT) { if (bt == VT_FLOAT) {
gv(RC_FLOAT); gv(RC_XMM0); /* to avoid rewriting to handle xmm1 for now */
if (tbt == VT_DOUBLE) { if (tbt == VT_DOUBLE) {
o(0xc0140f); /* unpcklps */ o(0xc0140f); /* unpcklps */
o(0xc05a0f); /* cvtps2pd */ o(0xc05a0f); /* cvtps2pd */
@ -1817,7 +1854,7 @@ void gen_cvt_ftof(int t)
vtop->r = TREG_ST0; vtop->r = TREG_ST0;
} }
} else if (bt == VT_DOUBLE) { } else if (bt == VT_DOUBLE) {
gv(RC_FLOAT); gv(RC_XMM0); /* to avoid rewriting to handle xmm1 for now */
if (tbt == VT_FLOAT) { if (tbt == VT_FLOAT) {
o(0xc0140f66); /* unpcklpd */ o(0xc0140f66); /* unpcklpd */
o(0xc05a0f66); /* cvtpd2ps */ o(0xc05a0f66); /* cvtpd2ps */
@ -1857,7 +1894,7 @@ void gen_cvt_ftoi(int t)
bt = VT_DOUBLE; bt = VT_DOUBLE;
} }
gv(RC_FLOAT); gv(RC_XMM0);
if (t != VT_INT) if (t != VT_INT)
size = 8; size = 8;
else else