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| author | Jozef Lawrynowicz <jozef.l@mittosystems.com> | 2018-11-06 11:49:54 +0000 |
|---|---|---|
| committer | Jozef Lawrynowicz <jozefl@gcc.gnu.org> | 2018-11-06 11:49:54 +0000 |
| commit | f1b0a1ddd3a5c6ac86fae0483b31f45dd757f9d9 (patch) | |
| tree | cb01db3f96d93a5fd6ccd5bf6a8601c5a08b0228 /gcc/config/msp430 | |
| parent | d8c9d98687e0b49bde2898da7e195cbc49bb4ce6 (diff) | |
| download | gcc-f1b0a1ddd3a5c6ac86fae0483b31f45dd757f9d9.zip gcc-f1b0a1ddd3a5c6ac86fae0483b31f45dd757f9d9.tar.gz gcc-f1b0a1ddd3a5c6ac86fae0483b31f45dd757f9d9.tar.bz2 | |
msp430.h (REG_CLASS_CONTENTS): Add R0 to REG_CLASS_CONTENTS[GEN_REGS].
2018-11-06 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* gcc/config/msp430/msp430.h (REG_CLASS_CONTENTS): Add R0 to
REG_CLASS_CONTENTS[GEN_REGS].
(REGNO_REG_CLASS): Return NO_REGS for R2 and R3.
* gcc/testsuite/gcc.target/msp430/special-regs.c: New test.
From-SVN: r265839
Diffstat (limited to 'gcc/config/msp430')
| -rw-r--r-- | gcc/config/msp430/msp430.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/config/msp430/msp430.h b/gcc/config/msp430/msp430.h index 6bfe28c..380e63e 100644 --- a/gcc/config/msp430/msp430.h +++ b/gcc/config/msp430/msp430.h @@ -241,10 +241,15 @@ enum reg_class 0x00000000, \ 0x00001000, \ 0x00002000, \ - 0x0000fff2, \ + 0x0000fff3, \ 0x0001ffff \ } +/* GENERAL_REGS just means that the "g" and "r" constraints can use these + registers. + Even though R0 (PC) and R1 (SP) are not "general" in that they can be used + for any purpose by the register allocator, they are general in that they can + be used by any instruction in any addressing mode. */ #define GENERAL_REGS GEN_REGS #define BASE_REG_CLASS GEN_REGS #define INDEX_REG_CLASS GEN_REGS @@ -259,7 +264,9 @@ enum reg_class #define FIRST_PSEUDO_REGISTER 17 -#define REGNO_REG_CLASS(REGNO) ((REGNO) < 17 \ +#define REGNO_REG_CLASS(REGNO) (REGNO != 2 \ + && REGNO != 3 \ + && REGNO < 17 \ ? GEN_REGS : NO_REGS) #define TRAMPOLINE_SIZE 4 /* FIXME */ |