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| author | Andreas Krebbel <krebbel@linux.ibm.com> | 2023-01-10 09:59:02 +0100 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@linux.ibm.com> | 2023-01-10 10:02:44 +0100 |
| commit | 0333892db367b2b97b1ab9d3702b16f3f9e92ec3 (patch) | |
| tree | 467b76dee820976b4e746de6ad917e18c8ed834d | |
| parent | 84723acaa0edceb5c03a9646369d0713f106947b (diff) | |
| download | gcc-0333892db367b2b97b1ab9d3702b16f3f9e92ec3.zip gcc-0333892db367b2b97b1ab9d3702b16f3f9e92ec3.tar.gz gcc-0333892db367b2b97b1ab9d3702b16f3f9e92ec3.tar.bz2 | |
IBM zSystems: Make -fcall-saved-... work.
gcc/ChangeLog:
* config/s390/s390.cc (s390_register_info): Check call_used_regs
instead of hard-coding the register numbers for call saved
registers.
(s390_optimize_register_info): Likewise.
gcc/testsuite/ChangeLog:
* gcc.target/s390/fcall-saved.c: New test.
| -rw-r--r-- | gcc/config/s390/s390.cc | 10 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/s390/fcall-saved.c | 11 |
2 files changed, 15 insertions, 6 deletions
diff --git a/gcc/config/s390/s390.cc b/gcc/config/s390/s390.cc index 42177c2..a9bb610 100644 --- a/gcc/config/s390/s390.cc +++ b/gcc/config/s390/s390.cc @@ -10075,8 +10075,8 @@ s390_register_info () memset (cfun_frame_layout.gpr_save_slots, SAVE_SLOT_NONE, 16); - for (i = 6; i < 16; i++) - if (clobbered_regs[i]) + for (i = 0; i < 16; i++) + if (clobbered_regs[i] && !call_used_regs[i]) cfun_gpr_save_slot (i) = SAVE_SLOT_STACK; s390_register_info_stdarg_fpr (); @@ -10136,10 +10136,8 @@ s390_optimize_register_info () || cfun_frame_layout.save_return_addr_p || crtl->calls_eh_return); - memset (cfun_frame_layout.gpr_save_slots, SAVE_SLOT_NONE, 6); - - for (i = 6; i < 16; i++) - if (!clobbered_regs[i]) + for (i = 0; i < 16; i++) + if (!clobbered_regs[i] || call_used_regs[i]) cfun_gpr_save_slot (i) = SAVE_SLOT_NONE; s390_register_info_set_ranges (); diff --git a/gcc/testsuite/gcc.target/s390/fcall-saved.c b/gcc/testsuite/gcc.target/s390/fcall-saved.c new file mode 100644 index 0000000..a081553 --- /dev/null +++ b/gcc/testsuite/gcc.target/s390/fcall-saved.c @@ -0,0 +1,11 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -mzarch -fcall-saved-r4" } */ + +void test(void) { + asm volatile("nop" ::: "r4"); +} + +/* { dg-final { scan-assembler-times "\tstg\t" 1 { target { lp64 } } } } */ +/* { dg-final { scan-assembler-times "\tlg\t" 1 { target { lp64 } } } } */ +/* { dg-final { scan-assembler-times "\tst\t" 1 { target { ! lp64 } } } } */ +/* { dg-final { scan-assembler-times "\tl\t" 1 { target { ! lp64 } } } } */ |