diff options
Diffstat (limited to 'gcc/config/aarch64/aarch64.c')
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index e682edd..03f3ac4 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -310,6 +310,7 @@ static const struct cpu_vector_cost cortexa57_vector_cost = #define AARCH64_FUSE_ADRP_ADD (1 << 1) #define AARCH64_FUSE_MOVK_MOVK (1 << 2) #define AARCH64_FUSE_ADRP_LDR (1 << 3) +#define AARCH64_FUSE_CMP_BRANCH (1 << 4) #if HAVE_DESIGNATED_INITIALIZERS && GCC_VERSION >= 2007 __extension__ @@ -356,7 +357,7 @@ static const struct tune_params thunderx_tunings = &generic_vector_cost, NAMED_PARAM (memmov_cost, 6), NAMED_PARAM (issue_rate, 2), - NAMED_PARAM (fuseable_ops, AARCH64_FUSE_NOTHING) + NAMED_PARAM (fuseable_ops, AARCH64_FUSE_CMP_BRANCH) }; /* A processor implementing AArch64. */ @@ -10379,6 +10380,20 @@ aarch_macro_fusion_pair_p (rtx_insn *prev, rtx_insn *curr) } } + if ((aarch64_tune_params->fuseable_ops & AARCH64_FUSE_CMP_BRANCH) + && any_condjump_p (curr)) + { + enum attr_type prev_type = get_attr_type (prev); + + /* FIXME: this misses some which is considered simple arthematic + instructions for ThunderX. Simple shifts are missed here. */ + if (prev_type == TYPE_ALUS_SREG + || prev_type == TYPE_ALUS_IMM + || prev_type == TYPE_LOGICS_REG + || prev_type == TYPE_LOGICS_IMM) + return true; + } + return false; } |