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| author | Jeff Law <jeffreyalaw@gmail.com> | 2021-06-25 09:22:28 -0400 |
|---|---|---|
| committer | Jeff Law <jeffreyalaw@gmail.com> | 2021-06-25 09:22:28 -0400 |
| commit | 3a50aed09edc5e69080a0e49851acdb874227256 (patch) | |
| tree | 23edb7c61b8c7a27d6a70f51dda3c6b2e6b8e8a4 /gcc/config/h8300 | |
| parent | 55a1546b73b60d2601f35671ba9e8f12a52a7b77 (diff) | |
| download | gcc-3a50aed09edc5e69080a0e49851acdb874227256.zip gcc-3a50aed09edc5e69080a0e49851acdb874227256.tar.gz gcc-3a50aed09edc5e69080a0e49851acdb874227256.tar.bz2 | |
Use right shifts to eliminate redundant test/compare insns on the H8
gcc/
* config/h8300/h8300.c (select_cc_mode): Handle ASHIFTRT and LSHIFTRT.
Diffstat (limited to 'gcc/config/h8300')
| -rw-r--r-- | gcc/config/h8300/h8300.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index 511c2b2..d8b4bfc 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -1947,9 +1947,10 @@ h8300_select_cc_mode (enum rtx_code cond, rtx op0, rtx op1) if (op1 == const0_rtx && (cond == EQ || cond == NE || cond == LT || cond == GE) && (GET_CODE (op0) == PLUS || GET_CODE (op0) == MINUS - || GET_CODE (op0) == NEG || GET_CODE (op0) == AND - || GET_CODE (op0) == IOR || GET_CODE (op0) == XOR - || GET_CODE (op0) == NOT || GET_CODE (op0) == ASHIFT + || GET_CODE (op0) == NEG || GET_CODE (op0) == AND + || GET_CODE (op0) == IOR || GET_CODE (op0) == XOR + || GET_CODE (op0) == NOT || GET_CODE (op0) == ASHIFT + || GET_CODE (op0) == ASHIFTRT || GET_CODE (op0) == LSHIFTRT || GET_CODE (op0) == MULT || GET_CODE (op0) == SYMBOL_REF || GET_CODE (op0) == SIGN_EXTEND || GET_CODE (op0) == ZERO_EXTEND || REG_P (op0) || MEM_P (op0))) |