| Message ID | 20240305115125.368489-1-xry111@xry111.site |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] LoongArch: Allow s9 as a register alias | expand |
在 2024/3/5 下午7:50, Xi Ruoyao 写道: > The psABI allows using s9 as an alias of r22. > > gcc/ChangeLog: > > * config/loongarch/loongarch.h (ADDITIONAL_REGISTER_NAMES): Add > s9 as an alias of r22. > --- > > v1 -> v2: Add a test case. > > Ok for trunk? Ok. Thanks! > > gcc/config/loongarch/loongarch.h | 1 + > gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c | 3 +++ > 2 files changed, 4 insertions(+) > create mode 100644 gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c > > diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h > index 8b453ab3140..bf2351f0968 100644 > --- a/gcc/config/loongarch/loongarch.h > +++ b/gcc/config/loongarch/loongarch.h > @@ -931,6 +931,7 @@ typedef struct { > { "t8", 20 + GP_REG_FIRST }, \ > { "x", 21 + GP_REG_FIRST }, \ > { "fp", 22 + GP_REG_FIRST }, \ > + { "s9", 22 + GP_REG_FIRST }, \ > { "s0", 23 + GP_REG_FIRST }, \ > { "s1", 24 + GP_REG_FIRST }, \ > { "s2", 25 + GP_REG_FIRST }, \ > diff --git a/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c > new file mode 100644 > index 00000000000..d2e3b80f83c > --- /dev/null > +++ b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c > @@ -0,0 +1,3 @@ > +/* { dg-do compile } */ > +register long s9 asm("s9"); /* { dg-note "conflicts with 's9'" } */ > +register long fp asm("fp"); /* { dg-warning "register of 'fp' used for multiple global register variables" } */
diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h index 8b453ab3140..bf2351f0968 100644 --- a/gcc/config/loongarch/loongarch.h +++ b/gcc/config/loongarch/loongarch.h @@ -931,6 +931,7 @@ typedef struct { { "t8", 20 + GP_REG_FIRST }, \ { "x", 21 + GP_REG_FIRST }, \ { "fp", 22 + GP_REG_FIRST }, \ + { "s9", 22 + GP_REG_FIRST }, \ { "s0", 23 + GP_REG_FIRST }, \ { "s1", 24 + GP_REG_FIRST }, \ { "s2", 25 + GP_REG_FIRST }, \ diff --git a/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c new file mode 100644 index 00000000000..d2e3b80f83c --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c @@ -0,0 +1,3 @@ +/* { dg-do compile } */ +register long s9 asm("s9"); /* { dg-note "conflicts with 's9'" } */ +register long fp asm("fp"); /* { dg-warning "register of 'fp' used for multiple global register variables" } */