From: Dominik Vogt Date: Tue, 23 Aug 2016 09:01:42 +0000 (+0000) Subject: S/390: Add splitter for "and" with complement. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=deb9351fafe1032ced16f9608068f65930e06841;p=gcc.git S/390: Add splitter for "and" with complement. Split ~b & a to (b & a) ^ a. This is benefitial on z Systems since we otherwise need a big -1 constant to be loaded for the ~b. gcc/ChangeLog: 2016-08-23 Dominik Vogt * config/s390/s390.md ("*andc_split"): New splitter for and with complement. gcc/testsuite/ChangeLog: 2016-08-23 Dominik Vogt * gcc.target/s390/md/andc-splitter-1.c: New test case. * gcc.target/s390/md/andc-splitter-2.c: Likewise. From-SVN: r239685 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 13b4ad581c2..8b1dc4ba051 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-08-23 Dominik Vogt + + * config/s390/s390.md ("*andc_split"): New splitter for and with + complement. + 2016-08-23 Richard Biener PR tree-optimization/27336 diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md index a63cee9ebe0..30ddc14a46f 100644 --- a/gcc/config/s390/s390.md +++ b/gcc/config/s390/s390.md @@ -7266,6 +7266,33 @@ [(set_attr "op_type" "RR,SI,SS") (set_attr "z10prop" "z10_super_E1,z10_super,*")]) +; +; And with complement +; +; c = ~b & a = (b & a) ^ a + +(define_insn_and_split "*andc_split_" + [(set (match_operand:GPR 0 "nonimmediate_operand" "") + (and:GPR (not:GPR (match_operand:GPR 1 "nonimmediate_operand" "")) + (match_operand:GPR 2 "general_operand" ""))) + (clobber (reg:CC CC_REGNUM))] + "! reload_completed && s390_logical_operator_ok_p (operands)" + "#" + "&& 1" + [ + (parallel + [(set (match_dup 3) (and:GPR (match_dup 1) (match_dup 2))) + (clobber (reg:CC CC_REGNUM))]) + (parallel + [(set (match_dup 0) (xor:GPR (match_dup 3) (match_dup 2))) + (clobber (reg:CC CC_REGNUM))])] +{ + if (reg_overlap_mentioned_p (operands[0], operands[2])) + operands[3] = gen_reg_rtx (mode); + else + operands[3] = operands[0]; +}) + ; ; Block and (NC) patterns. ; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 812c0c52ce7..c02a4b821e3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-08-23 Dominik Vogt + + * gcc.target/s390/md/andc-splitter-1.c: New test case. + * gcc.target/s390/md/andc-splitter-2.c: Likewise. + 2016-08-23 Richard Biener PR tree-optimization/27336 diff --git a/gcc/testsuite/gcc.target/s390/md/andc-splitter-1.c b/gcc/testsuite/gcc.target/s390/md/andc-splitter-1.c new file mode 100644 index 00000000000..ed78921e5c9 --- /dev/null +++ b/gcc/testsuite/gcc.target/s390/md/andc-splitter-1.c @@ -0,0 +1,61 @@ +/* Machine description pattern tests. */ + +/* { dg-do run { target { lp64 } } } */ +/* { dg-options "-mzarch -save-temps -dP" } */ +/* Skip test if -O0 is present on the command line: + + { dg-skip-if "" { *-*-* } { "-O0" } { "" } } + + Skip test if the -O option is missing from the command line + { dg-skip-if "" { *-*-* } { "*" } { "-O*" } } +*/ + +__attribute__ ((noinline)) +unsigned long andc_vv(unsigned long a, unsigned long b) +{ return ~b & a; } +/* { dg-final { scan-assembler ":15 .\* \{\\*anddi3\}" } } */ +/* { dg-final { scan-assembler ":15 .\* \{\\*xordi3\}" } } */ + +__attribute__ ((noinline)) +unsigned long andc_pv(unsigned long *a, unsigned long b) +{ return ~b & *a; } +/* { dg-final { scan-assembler ":21 .\* \{\\*anddi3\}" } } */ +/* { dg-final { scan-assembler ":21 .\* \{\\*xordi3\}" } } */ + +__attribute__ ((noinline)) +unsigned long andc_vp(unsigned long a, unsigned long *b) +{ return ~*b & a; } +/* { dg-final { scan-assembler ":27 .\* \{\\*anddi3\}" } } */ +/* { dg-final { scan-assembler ":27 .\* \{\\*xordi3\}" } } */ + +__attribute__ ((noinline)) +unsigned long andc_pp(unsigned long *a, unsigned long *b) +{ return ~*b & *a; } +/* { dg-final { scan-assembler ":33 .\* \{\\*anddi3\}" } } */ +/* { dg-final { scan-assembler ":33 .\* \{\\*xordi3\}" } } */ + +/* { dg-final { scan-assembler-times "\tngr\?k\?\t" 4 } } */ +/* { dg-final { scan-assembler-times "\txgr\?\t" 4 } } */ + +int +main (void) +{ + unsigned long a = 0xc00000000000000cllu; + unsigned long b = 0x500000000000000allu; + unsigned long e = 0x8000000000000004llu; + unsigned long c; + + c = andc_vv (a, b); + if (c != e) + __builtin_abort (); + c = andc_pv (&a, b); + if (c != e) + __builtin_abort (); + c = andc_vp (a, &b); + if (c != e) + __builtin_abort (); + c = andc_pp (&a, &b); + if (c != e) + __builtin_abort (); + return 0; +} diff --git a/gcc/testsuite/gcc.target/s390/md/andc-splitter-2.c b/gcc/testsuite/gcc.target/s390/md/andc-splitter-2.c new file mode 100644 index 00000000000..d88da4d4f6b --- /dev/null +++ b/gcc/testsuite/gcc.target/s390/md/andc-splitter-2.c @@ -0,0 +1,61 @@ +/* Machine description pattern tests. */ + +/* { dg-do run } */ +/* { dg-options "-save-temps -dP" } */ +/* Skip test if -O0 is present on the command line: + + { dg-skip-if "" { *-*-* } { "-O0" } { "" } } + + Skip test if the -O option is missing from the command line + { dg-skip-if "" { *-*-* } { "*" } { "-O*" } } +*/ + +__attribute__ ((noinline)) +unsigned int andc_vv(unsigned int a, unsigned int b) +{ return ~b & a; } +/* { dg-final { scan-assembler ":15 .\* \{\\*andsi3_\(esa\|zarch\)\}" } } */ +/* { dg-final { scan-assembler ":15 .\* \{\\*xorsi3\}" } } */ + +__attribute__ ((noinline)) +unsigned int andc_pv(unsigned int *a, unsigned int b) +{ return ~b & *a; } +/* { dg-final { scan-assembler ":21 .\* \{\\*andsi3_\(esa\|zarch\)\}" } } */ +/* { dg-final { scan-assembler ":21 .\* \{\\*xorsi3\}" } } */ + +__attribute__ ((noinline)) +unsigned int andc_vp(unsigned int a, unsigned int *b) +{ return ~*b & a; } +/* { dg-final { scan-assembler ":27 .\* \{\\*andsi3_\(esa\|zarch\)\}" } } */ +/* { dg-final { scan-assembler ":27 .\* \{\\*xorsi3\}" } } */ + +__attribute__ ((noinline)) +unsigned int andc_pp(unsigned int *a, unsigned int *b) +{ return ~*b & *a; } +/* { dg-final { scan-assembler ":33 .\* \{\\*andsi3_\(esa\|zarch\)\}" } } */ +/* { dg-final { scan-assembler ":33 .\* \{\\*xorsi3\}" } } */ + +/* { dg-final { scan-assembler-times "\tnr\?k\?\t" 4 } } */ +/* { dg-final { scan-assembler-times "\txr\?k\?\t" 4 } } */ + +int +main (void) +{ + unsigned int a = 0xc000000cu; + unsigned int b = 0x5000000au; + unsigned int e = 0x80000004u; + unsigned int c; + + c = andc_vv (a, b); + if (c != e) + __builtin_abort (); + c = andc_pv (&a, b); + if (c != e) + __builtin_abort (); + c = andc_vp (a, &b); + if (c != e) + __builtin_abort (); + c = andc_pp (&a, &b); + if (c != e) + __builtin_abort (); + return 0; +}