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| author | Claudiu Zissulescu <claziss@synopsys.com> | 2017-03-27 12:56:04 +0200 |
|---|---|---|
| committer | Claudiu Zissulescu <claziss@gcc.gnu.org> | 2017-03-27 12:56:04 +0200 |
| commit | 84804c5b47636c7fa8bbbd1481ed426f2efc2654 (patch) | |
| tree | 98fbcc94f6f8c9ff7f65db94999708007e2de327 /gcc | |
| parent | c5e5f5f6429b05b47110f8dea839ec055d69bb4f (diff) | |
| download | gcc-84804c5b47636c7fa8bbbd1481ed426f2efc2654.zip gcc-84804c5b47636c7fa8bbbd1481ed426f2efc2654.tar.gz gcc-84804c5b47636c7fa8bbbd1481ed426f2efc2654.tar.bz2 | |
[ARC] Save/restore blink when in ISR.
gcc/
2017-03-27 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_epilogue_uses): BLINK should be also
restored when in interrupt.
* config/arc/arc.md (simple_return): ARCv2 rtie instruction
doesn't have delay slot.
2017-03-27 Claudiu Zissulescu <claziss@synopsys.com>
* testsuite/gcc.target/arc/interrupt-4.c: New file.
From-SVN: r246495
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/arc/arc.c | 10 | ||||
| -rw-r--r-- | gcc/config/arc/arc.md | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/arc/interrupt-4.c | 15 |
5 files changed, 38 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2997a00..336fa7f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2017-03-27 Claudiu Zissulescu <claziss@synopsys.com> + + * config/arc/arc.c (arc_epilogue_uses): BLINK should be also + restored when in interrupt. + * config/arc/arc.md (simple_return): ARCv2 rtie instruction + doesn't have delay slot. + 2017-03-27 Richard Biener <rguenther@suse.de> PR ipa/79776 diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c index 1116b2d..0563a74 100644 --- a/gcc/config/arc/arc.c +++ b/gcc/config/arc/arc.c @@ -9381,9 +9381,10 @@ arc_can_follow_jump (const rtx_insn *follower, const rtx_insn *followee) Return true if REGNO should be added to the deemed uses of the epilogue. We use the return address - arc_return_address_regs[arc_compute_function_type (cfun)] . - But also, we have to make sure all the register restore instructions - are known to be live in interrupt functions. */ + arc_return_address_regs[arc_compute_function_type (cfun)]. But + also, we have to make sure all the register restore instructions + are known to be live in interrupt functions, plus the blink + register if it is clobbered by the isr. */ bool arc_epilogue_uses (int regno) @@ -9396,7 +9397,8 @@ arc_epilogue_uses (int regno) { if (!fixed_regs[regno]) return true; - return regno == arc_return_address_regs[cfun->machine->fn_type]; + return ((regno == arc_return_address_regs[cfun->machine->fn_type]) + || (regno == RETURN_ADDR_REGNUM)); } else return regno == RETURN_ADDR_REGNUM; diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md index a65735f..88b7fca 100644 --- a/gcc/config/arc/arc.md +++ b/gcc/config/arc/arc.md @@ -4748,7 +4748,12 @@ output_asm_insn (\"j%!%* [%0]%&\", ®); return \"\"; } - [(set_attr "type" "return") + [(set (attr "type") + (cond [(and (eq (symbol_ref "arc_compute_function_type (cfun)") + (symbol_ref "ARC_FUNCTION_ILINK1")) + (match_test "TARGET_V2")) + (const_string "brcc_no_delay_slot")] + (const_string "return"))) ; predicable won't help here since the canonical rtl looks different ; for branches. (set (attr "cond") diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 169a2ca..184ccdb 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2017-03-27 Claudiu Zissulescu <claziss@synopsys.com> + + * testsuite/gcc.target/arc/interrupt-4.c: New file. + 2017-03-27 Richard Biener <rguenther@suse.de> PR ipa/79776 diff --git a/gcc/testsuite/gcc.target/arc/interrupt-4.c b/gcc/testsuite/gcc.target/arc/interrupt-4.c new file mode 100644 index 0000000..ea6596e --- /dev/null +++ b/gcc/testsuite/gcc.target/arc/interrupt-4.c @@ -0,0 +1,15 @@ +#if defined (__ARCHS__) || defined (__ARCEM__) +#define RILINK "ilink" +#else +#define RILINK "ilink1" +#endif + +extern int gpio_int; +extern int read_reg (int); + +void __attribute__ ((interrupt(RILINK))) +isr_handler (void) +{ + gpio_int = read_reg (1); +} +/* { dg-final { scan-assembler-times "blink" 2 } } */ |