Pushed to r15-6488. 在 2024/12/30 上午10:37, Guo Jie 写道:
The xvexth related instructions operate SEPARATELY according to the high and low 128 bits, and sign/zero extend the upper half of every 128 bits in src to the corresponding 128 bits in dest.For xvexth.d.w, the rule for the first element of dest should be: dest.D[0] = sign_extend (src.W[2] ,64); instead of: dest.D[0] = sign_extend (src.W[4] ,64); gcc/ChangeLog: * config/loongarch/lasx.md: Fix selector index. --- gcc/config/loongarch/lasx.md | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md index 071a5cb1733..7d3c035eef4 100644 --- a/gcc/config/loongarch/lasx.md +++ b/gcc/config/loongarch/lasx.md @@ -4249,10 +4249,10 @@ (define_insn "lasx_xvexth_h<u>_b<u>" (any_extend:V16HI (vec_select:V16QI (match_operand:V32QI 1 "register_operand" "f") - (parallel [(const_int 16) (const_int 17) - (const_int 18) (const_int 19) - (const_int 20) (const_int 21) - (const_int 22) (const_int 23) + (parallel [(const_int 8) (const_int 9) + (const_int 10) (const_int 11) + (const_int 12) (const_int 13) + (const_int 14) (const_int 15) (const_int 24) (const_int 25) (const_int 26) (const_int 27) (const_int 28) (const_int 29) @@ -4267,8 +4267,8 @@ (define_insn "lasx_xvexth_w<u>_h<u>" (any_extend:V8SI (vec_select:V8HI (match_operand:V16HI 1 "register_operand" "f") - (parallel [(const_int 8) (const_int 9) - (const_int 10) (const_int 11) + (parallel [(const_int 4) (const_int 5) + (const_int 6) (const_int 7) (const_int 12) (const_int 13) (const_int 14) (const_int 15)]))))] "ISA_HAS_LASX" @@ -4281,7 +4281,7 @@ (define_insn "lasx_xvexth_d<u>_w<u>" (any_extend:V4DI (vec_select:V4SI (match_operand:V8SI 1 "register_operand" "f") - (parallel [(const_int 4) (const_int 5) + (parallel [(const_int 2) (const_int 3) (const_int 6) (const_int 7)]))))] "ISA_HAS_LASX" "xvexth.d<u>.w<u>\t%u0,%u1"
