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| author | Xi Ruoyao <xry111@xry111.site> | 2023-09-08 00:29:57 +0800 |
|---|---|---|
| committer | Xi Ruoyao <xry111@xry111.site> | 2023-09-09 14:32:56 +0800 |
| commit | c0bb7a6f39e58717d34c9459586c0b1d5db16d89 (patch) | |
| tree | eba381eda395a84f083c6d6080a7442e110e06d7 /gcc | |
| parent | 35adc54b55aa199f17e2c84e382792e424b6171e (diff) | |
| download | gcc-c0bb7a6f39e58717d34c9459586c0b1d5db16d89.zip gcc-c0bb7a6f39e58717d34c9459586c0b1d5db16d89.tar.gz gcc-c0bb7a6f39e58717d34c9459586c0b1d5db16d89.tar.bz2 | |
LoongArch: Slightly simplify loongarch_block_move_straight
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_block_move_straight):
Check precondition (delta must be a power of 2) and use
popcount_hwi instead of a homebrew loop.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/loongarch/loongarch.cc | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc index 509ef2b..845fad5 100644 --- a/gcc/config/loongarch/loongarch.cc +++ b/gcc/config/loongarch/loongarch.cc @@ -5225,9 +5225,8 @@ loongarch_block_move_straight (rtx dest, rtx src, HOST_WIDE_INT length, emit two ld.d/st.d pairs, one ld.w/st.w pair, and one ld.b/st.b pair. For each load/store pair we use a dedicated register to keep the pipeline as populated as possible. */ - HOST_WIDE_INT num_reg = length / delta; - for (delta_cur = delta / 2; delta_cur != 0; delta_cur /= 2) - num_reg += !!(length & delta_cur); + gcc_assert (pow2p_hwi (delta)); + HOST_WIDE_INT num_reg = length / delta + popcount_hwi (length % delta); /* Allocate a buffer for the temporary registers. */ regs = XALLOCAVEC (rtx, num_reg); |