diff --git a/gcc/expr.cc b/gcc/expr.cc index 635bb9efa9e..235e7954611 100644 --- a/gcc/expr.cc +++ b/gcc/expr.cc @@ -1062,12 +1062,13 @@ widest_fixed_size_mode_for_size (unsigned int size, by_pieces_operation op) gcc_checking_assert (size > 1); /* Use QI vector only if size is wider than a WORD. */ - if (can_use_qi_vectors (op) && size > UNITS_PER_WORD) + if (can_use_qi_vectors (op)) { machine_mode mode; fixed_size_mode candidate; FOR_EACH_MODE_IN_CLASS (mode, MODE_VECTOR_INT) if (is_a (mode, &candidate) + && GET_MODE_SIZE (candidate) > UNITS_PER_WORD && GET_MODE_INNER (candidate) == QImode) { if (GET_MODE_SIZE (candidate) >= size) diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr113469.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr113469.c index 52e2580c53e..6549ae61c67 100644 --- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr113469.c +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/pr113469.c @@ -51,5 +51,4 @@ void p(int buf, __builtin_va_list ab, int q) { } while (k); } -/* { dg-final { scan-assembler-times {vsetivli\tzero,\s*4,\s*e8,\s*mf4,\s*t[au],\s*m[au]} 1 } } */ /* { dg-final { scan-assembler-times {vsetivli\tzero,\s*8,\s*e8,\s*mf2,\s*t[au],\s*m[au]} 1 } } */ diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/movqi-1.c b/gcc/testsuite/gcc.target/riscv/rvv/base/movqi-1.c new file mode 100644 index 00000000000..bc461035e5b --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/movqi-1.c @@ -0,0 +1,18 @@ +/* Test that we do not use QI vector to initilize the memory if the + * size of QI vector isn't larger than UNITS_PER_WORD */ +/* { dg-do compile } */ +/* { dg-options "-march=rv32gcv -mabi=ilp32 -O3" } */ + +struct s { + int a; + int b : 1; +}; + +void q(struct s*); + +void g() { + struct s r = { 15, 0 }; + q(&r); +} + +/* { dg-final { scan-assembler-times {sw\tzero,12\(sp\)} 1 } } */