From: Uros Bizjak Date: Sun, 31 Jul 2011 17:50:08 +0000 (+0200) Subject: re PR target/49920 (unable to find a register to spill in class ‘DIREG’) X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=deb1f6171dd2d87bdf5f7d76b69336126aaa9cc9;p=gcc.git re PR target/49920 (unable to find a register to spill in class ‘DIREG’) PR target/49920 * config/i386/i386.md (strset): Do not expand strset_singleop when %eax or $edi are fixed. (*strsetdi_rex_1): Disable when %eax or %edi are fixed. (*strsetsi_1): Ditto. (*strsethi_1): Ditto. (*strsetqi_1): Ditto. (*rep_stosdi_rex64): Disable when %eax, %ecx or %edi are fixed. (*rep_stossi): Ditto. (*rep_stosqi): Ditto. (cmpstrnsi): Also fail when %ecx is fixed. (*cmpstrnqi_nz_1): Disable when %ecx, %esi or %edi are fixed. (*cmpstrnqi_1): Ditto. (*strlenqi_1): Ditto. (*strmovdi_rex_1): Disable when %esi or %edi are fixed. (*strmovsi_1): Ditto. (*strmovhi_1): Ditto. (*strmovqi_1): Ditto. (*rep_movdi_rex64): Disable when %ecx, %esi or %edi are fixed. (*rep_movsi): Ditto. (*rep_movqi): Ditto. testsuite/ChangeLog: PR target/49920 * gcc.target/i386/pr49920.c: New test. From-SVN: r176979 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b637de28a07..e092d00873d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,27 @@ +2011-07-31 Uros Bizjak + + PR target/49920 + * config/i386/i386.md (strset): Do not expand strset_singleop + when %eax or $edi are fixed. + (*strsetdi_rex_1): Disable when %eax or %edi are fixed. + (*strsetsi_1): Ditto. + (*strsethi_1): Ditto. + (*strsetqi_1): Ditto. + (*rep_stosdi_rex64): Disable when %eax, %ecx or %edi are fixed. + (*rep_stossi): Ditto. + (*rep_stosqi): Ditto. + (cmpstrnsi): Also fail when %ecx is fixed. + (*cmpstrnqi_nz_1): Disable when %ecx, %esi or %edi are fixed. + (*cmpstrnqi_1): Ditto. + (*strlenqi_1): Ditto. + (*strmovdi_rex_1): Disable when %esi or %edi are fixed. + (*strmovsi_1): Ditto. + (*strmovhi_1): Ditto. + (*strmovqi_1): Ditto. + (*rep_movdi_rex64): Disable when %ecx, %esi or %edi are fixed. + (*rep_movsi): Ditto. + (*rep_movqi): Ditto. + 2011-07-31 Mikael Pettersson PR target/47908 @@ -40,8 +64,7 @@ Use scaninvent instead of /proc/cpuinfo if __sgi__. * config.host: Also use driver-native.o, mips/x-native on mips-sgi-irix*. - * config/mips/iris6.h [__mips__] (host_detect_local_cpu): - Declare. + * config/mips/iris6.h [__mips__] (host_detect_local_cpu): Declare. (EXTRA_SPEC_FUNCTIONS, MARCH_MTUNE_NATIVE_SPECS): Define. (DRIVER_SELF_SPECS): Add MARCH_MTUNE_NATIVE_SPECS. diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 2210bc819d9..5dfa43ee427 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -15421,7 +15421,8 @@ (set (match_operand:DI 1 "register_operand" "=S") (plus:DI (match_dup 3) (const_int 8)))] - "TARGET_64BIT" + "TARGET_64BIT + && !(fixed_regs[SI_REG] || fixed_regs[DI_REG])" "movsq" [(set_attr "type" "str") (set_attr "memory" "both") @@ -15436,7 +15437,7 @@ (set (match_operand:P 1 "register_operand" "=S") (plus:P (match_dup 3) (const_int 4)))] - "" + "!(fixed_regs[SI_REG] || fixed_regs[DI_REG])" "movs{l|d}" [(set_attr "type" "str") (set_attr "memory" "both") @@ -15451,7 +15452,7 @@ (set (match_operand:P 1 "register_operand" "=S") (plus:P (match_dup 3) (const_int 2)))] - "" + "!(fixed_regs[SI_REG] || fixed_regs[DI_REG])" "movsw" [(set_attr "type" "str") (set_attr "memory" "both") @@ -15466,7 +15467,7 @@ (set (match_operand:P 1 "register_operand" "=S") (plus:P (match_dup 3) (const_int 1)))] - "" + "!(fixed_regs[SI_REG] || fixed_regs[DI_REG])" "movsb" [(set_attr "type" "str") (set_attr "memory" "both") @@ -15501,7 +15502,8 @@ (set (mem:BLK (match_dup 3)) (mem:BLK (match_dup 4))) (use (match_dup 5))] - "TARGET_64BIT" + "TARGET_64BIT + && !(fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG])" "rep{%;} movsq" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15520,7 +15522,7 @@ (set (mem:BLK (match_dup 3)) (mem:BLK (match_dup 4))) (use (match_dup 5))] - "" + "!(fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG])" "rep{%;} movs{l|d}" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15537,7 +15539,7 @@ (set (mem:BLK (match_dup 3)) (mem:BLK (match_dup 4))) (use (match_dup 5))] - "" + "!(fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG])" "rep{%;} movsb" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15580,7 +15582,9 @@ operands[3] = gen_rtx_PLUS (Pmode, operands[0], GEN_INT (GET_MODE_SIZE (GET_MODE (operands[2])))); - if (TARGET_SINGLE_STRINGOP || optimize_insn_for_size_p ()) + /* Can't use this if the user has appropriated eax or edi. */ + if ((TARGET_SINGLE_STRINGOP || optimize_insn_for_size_p ()) + && !(fixed_regs[AX_REG] || fixed_regs[DI_REG])) { emit_insn (gen_strset_singleop (operands[0], operands[1], operands[2], operands[3])); @@ -15602,7 +15606,8 @@ (set (match_operand:DI 0 "register_operand" "=D") (plus:DI (match_dup 1) (const_int 8)))] - "TARGET_64BIT" + "TARGET_64BIT + && !(fixed_regs[AX_REG] || fixed_regs[DI_REG])" "stosq" [(set_attr "type" "str") (set_attr "memory" "store") @@ -15614,7 +15619,7 @@ (set (match_operand:P 0 "register_operand" "=D") (plus:P (match_dup 1) (const_int 4)))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[DI_REG])" "stos{l|d}" [(set_attr "type" "str") (set_attr "memory" "store") @@ -15626,7 +15631,7 @@ (set (match_operand:P 0 "register_operand" "=D") (plus:P (match_dup 1) (const_int 2)))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[DI_REG])" "stosw" [(set_attr "type" "str") (set_attr "memory" "store") @@ -15638,7 +15643,7 @@ (set (match_operand:P 0 "register_operand" "=D") (plus:P (match_dup 1) (const_int 1)))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[DI_REG])" "stosb" [(set_attr "type" "str") (set_attr "memory" "store") @@ -15669,7 +15674,8 @@ (const_int 0)) (use (match_operand:DI 2 "register_operand" "a")) (use (match_dup 4))] - "TARGET_64BIT" + "TARGET_64BIT + && !(fixed_regs[AX_REG] || fixed_regs[CX_REG] || fixed_regs[DI_REG])" "rep{%;} stosq" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15686,7 +15692,7 @@ (const_int 0)) (use (match_operand:SI 2 "register_operand" "a")) (use (match_dup 4))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[CX_REG] || fixed_regs[DI_REG])" "rep{%;} stos{l|d}" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15702,7 +15708,7 @@ (const_int 0)) (use (match_operand:QI 2 "register_operand" "a")) (use (match_dup 4))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[CX_REG] || fixed_regs[DI_REG])" "rep{%;} stosb" [(set_attr "type" "str") (set_attr "prefix_rep" "1") @@ -15727,8 +15733,8 @@ if (optimize_insn_for_size_p () && !TARGET_INLINE_ALL_STRINGOPS) FAIL; - /* Can't use this if the user has appropriated esi or edi. */ - if (fixed_regs[SI_REG] || fixed_regs[DI_REG]) + /* Can't use this if the user has appropriated ecx, esi or edi. */ + if (fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG]) FAIL; out = operands[0]; @@ -15823,7 +15829,7 @@ (clobber (match_operand:P 0 "register_operand" "=S")) (clobber (match_operand:P 1 "register_operand" "=D")) (clobber (match_operand:P 2 "register_operand" "=c"))] - "" + "!(fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG])" "repz{%;} cmpsb" [(set_attr "type" "str") (set_attr "mode" "QI") @@ -15863,7 +15869,7 @@ (clobber (match_operand:P 0 "register_operand" "=S")) (clobber (match_operand:P 1 "register_operand" "=D")) (clobber (match_operand:P 2 "register_operand" "=c"))] - "" + "!(fixed_regs[CX_REG] || fixed_regs[SI_REG] || fixed_regs[DI_REG])" "repz{%;} cmpsb" [(set_attr "type" "str") (set_attr "mode" "QI") @@ -15904,7 +15910,7 @@ (match_operand:P 4 "register_operand" "0")] UNSPEC_SCAS)) (clobber (match_operand:P 1 "register_operand" "=D")) (clobber (reg:CC FLAGS_REG))] - "" + "!(fixed_regs[AX_REG] || fixed_regs[CX_REG] || fixed_regs[DI_REG])" "repnz{%;} scasb" [(set_attr "type" "str") (set_attr "mode" "QI") diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 3a78ad1454f..e6beacd7f25 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-07-31 Uros Bizjak + + PR target/49920 + * gcc.target/i386/pr49920.c: New test. + 2011-07-31 Uros Bizjak * gcc.dg/tree-ssa/20050314-1.c: Dump and cleanup lim1 pass only. diff --git a/gcc/testsuite/gcc.target/i386/pr49920.c b/gcc/testsuite/gcc.target/i386/pr49920.c new file mode 100644 index 00000000000..ef2a185122e --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr49920.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +/* { dg-require-effective-target ia32 } */ + +typedef __SIZE_TYPE__ size_t; +extern void *malloc (size_t); + +register unsigned int MR_mr0 asm ("esi"); +register unsigned int MR_mr1 asm ("edi"); + +void ml_backend__ml_closure_gen_module11 (void) +{ + unsigned int MR_tempr1, MR_tempr2, MR_tempr3; + + MR_tempr1 = (unsigned int)((char *) malloc (sizeof (unsigned int)) + 4); + MR_tempr3 = ((unsigned int *) MR_mr0)[0]; + + ((unsigned int *) (MR_tempr1 - 4))[0] = MR_tempr3; + + MR_tempr2 = (unsigned int)((char *) malloc (2 * sizeof (unsigned int))); + + ((unsigned int *) MR_tempr2)[1] = MR_tempr1; +}