re PR target/66047 (vlc compilation failure with target attribute)
PR target/66047 * i386.c (ix86_function_sseregparm): Only return -1 if local function with implied regparm is called from -mno-sse function. (init_cumulative_args): Output error if ix86_function_sseregparm return -1 and SSE register would be needed. (function_arg_advance_32): Likewise. (function_arg_32): Likewise. * i386.h (ix86_args): Add decl field. * gcc.target/i386/pr66047.c: New testcase. From-SVN: r223111
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Jan Hubicka
Jan Hubicka
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@ -1,3 +1,14 @@
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2015-05-12 Jan Hubicka <hubicka@ucw.cz>
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PR target/pr66047.c
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* i386.c (ix86_function_sseregparm): Only return -1 if local function
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with implied regparm is called from -mno-sse function.
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(init_cumulative_args): Output error if ix86_function_sseregparm
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return -1 and SSE register would be needed.
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(function_arg_advance_32): Likewise.
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(function_arg_32): Likewise.
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* i386.h (ix86_args): Add decl field.
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2015-05-12 Jan Hubicka <hubicka@ucw.cz>
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PR ipa/65873
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@ -5895,7 +5895,10 @@ ix86_function_regparm (const_tree type, const_tree decl)
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/* Return 1 or 2, if we can pass up to SSE_REGPARM_MAX SFmode (1) and
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DFmode (2) arguments in SSE registers for a function with the
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indicated TYPE and DECL. DECL may be NULL when calling function
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indirectly or considering a libcall. Otherwise return 0. */
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indirectly or considering a libcall. Return -1 if any FP parameter
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should be rejected by error. This is used in siutation we imply SSE
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calling convetion but the function is called from another function with
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SSE disabled. Otherwise return 0. */
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static int
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ix86_function_sseregparm (const_tree type, const_tree decl, bool warn)
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@ -5944,14 +5947,13 @@ ix86_function_sseregparm (const_tree type, const_tree decl, bool warn)
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{
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/* Refuse to produce wrong code when local function with SSE enabled
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is called from SSE disabled function.
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We may work hard to work out these scenarios but hopefully
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it doesnot matter in practice. */
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FIXME: We need a way to detect these cases cross-ltrans partition
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and avoid using SSE calling conventions on local functions called
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from function with SSE disabled. For now at least delay the
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warning until we know we are going to produce wrong code.
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See PR66047 */
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if (!TARGET_SSE && warn)
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{
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error ("calling %qD with SSE caling convention without "
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"SSE/SSE2 enabled", decl);
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return 0;
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}
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return -1;
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return TARGET_SSE2_P (target_opts_for_fn (target->decl)
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->x_ix86_isa_flags) ? 2 : 1;
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}
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@ -6507,6 +6509,7 @@ init_cumulative_args (CUMULATIVE_ARGS *cum, /* Argument info to initialize */
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cum->bnd_regno = FIRST_BND_REG;
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cum->bnds_in_bt = 0;
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cum->force_bnd_pass = 0;
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cum->decl = fndecl;
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if (!TARGET_64BIT)
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{
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@ -7452,6 +7455,7 @@ function_arg_advance_32 (CUMULATIVE_ARGS *cum, machine_mode mode,
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HOST_WIDE_INT words)
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{
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int res = 0;
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bool error_p = NULL;
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switch (mode)
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{
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@ -7484,9 +7488,13 @@ function_arg_advance_32 (CUMULATIVE_ARGS *cum, machine_mode mode,
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gcc_unreachable ();
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case DFmode:
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if (cum->float_in_sse == -1)
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error_p = 1;
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if (cum->float_in_sse < 2)
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break;
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case SFmode:
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if (cum->float_in_sse == -1)
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error_p = 1;
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if (cum->float_in_sse < 1)
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break;
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/* FALLTHRU */
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@ -7542,6 +7550,14 @@ function_arg_advance_32 (CUMULATIVE_ARGS *cum, machine_mode mode,
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}
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break;
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}
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if (error_p)
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{
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cum->float_in_sse = 0;
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error ("calling %qD with SSE calling convention without "
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"SSE/SSE2 enabled", cum->decl);
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sorry ("this is a GCC bug that can be worked around by adding "
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"attribute used to function called");
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}
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return res;
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}
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@ -7674,10 +7690,11 @@ ix86_function_arg_advance (cumulative_args_t cum_v, machine_mode mode,
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(otherwise it is an extra parameter matching an ellipsis). */
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static rtx
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function_arg_32 (const CUMULATIVE_ARGS *cum, machine_mode mode,
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function_arg_32 (CUMULATIVE_ARGS *cum, machine_mode mode,
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machine_mode orig_mode, const_tree type,
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HOST_WIDE_INT bytes, HOST_WIDE_INT words)
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{
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bool error_p = false;
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/* Avoid the AL settings for the Unix64 ABI. */
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if (mode == VOIDmode)
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return constm1_rtx;
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@ -7718,9 +7735,13 @@ function_arg_32 (const CUMULATIVE_ARGS *cum, machine_mode mode,
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break;
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case DFmode:
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if (cum->float_in_sse == -1)
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error_p = 1;
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if (cum->float_in_sse < 2)
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break;
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case SFmode:
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if (cum->float_in_sse == -1)
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error_p = 1;
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if (cum->float_in_sse < 1)
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break;
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/* FALLTHRU */
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@ -7779,6 +7800,14 @@ function_arg_32 (const CUMULATIVE_ARGS *cum, machine_mode mode,
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}
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break;
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}
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if (error_p)
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{
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cum->float_in_sse = 0;
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error ("calling %qD with SSE calling convention without "
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"SSE/SSE2 enabled", cum->decl);
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sorry ("this is a GCC bug that can be worked around by adding "
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"attribute used to function called");
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}
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return NULL_RTX;
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}
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@ -8258,8 +8287,15 @@ function_value_32 (machine_mode orig_mode, machine_mode mode,
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if ((fn || fntype) && (mode == SFmode || mode == DFmode))
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{
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int sse_level = ix86_function_sseregparm (fntype, fn, false);
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if ((sse_level >= 1 && mode == SFmode)
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|| (sse_level == 2 && mode == DFmode))
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if (sse_level == -1)
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{
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error ("calling %qD with SSE caling convention without "
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"SSE/SSE2 enabled", fn);
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sorry ("this is a GCC bug that can be worked around by adding "
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"attribute used to function called");
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}
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else if ((sse_level >= 1 && mode == SFmode)
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|| (sse_level == 2 && mode == DFmode))
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regno = FIRST_SSE_REG;
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}
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@ -1688,6 +1688,7 @@ typedef struct ix86_args {
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int stdarg; /* Set to 1 if function is stdarg. */
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enum calling_abi call_abi; /* Set to SYSV_ABI for sysv abi. Otherwise
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MS_ABI for ms abi. */
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tree decl; /* Callee decl. */
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} CUMULATIVE_ARGS;
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/* Initialize a variable CUM of type CUMULATIVE_ARGS
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@ -1,3 +1,8 @@
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2015-05-12 Jan Hubicka <hubicka@ucw.cz>
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PR target/pr66047.c
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* gcc.target/i386/pr66047.c: New testcase.
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2015-05-12 Jan Hubicka <hubicka@ucw.cz>
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PR ipa/65873
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15
gcc/testsuite/gcc.target/i386/pr66047.c
Normal file
15
gcc/testsuite/gcc.target/i386/pr66047.c
Normal file
@ -0,0 +1,15 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -mno-sse" } */
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/* { dg-require-effective-target ia32 } */
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__attribute__((target ("sse2"), noinline)) static void
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foo (void)
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{
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asm volatile ("" : : : "memory");
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}
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void
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bar (void)
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{
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foo ();
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}
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