Re:[pushed] [PATCH 1/2] LoongArch: TFmode is not allowed to be stored in the float register.

[Lulu Cheng]

Pushed to r15-1986.

在 2024/7/4 下午5:56, Lulu Cheng 写道:

        PR target/115752

gcc/ChangeLog:

        * config/loongarch/loongarch.cc
        (loongarch_hard_regno_mode_ok_uncached): Replace
        UNITS_PER_FPVALUE with UNITS_PER_HWFPVALUE.
        * config/loongarch/loongarch.h (UNITS_PER_FPVALUE): Delete.

gcc/testsuite/ChangeLog:

        * gcc.target/loongarch/pr115752.c: New test.
---
  gcc/config/loongarch/loongarch.cc             | 2 +-
  gcc/config/loongarch/loongarch.h              | 7 -------
  gcc/testsuite/gcc.target/loongarch/pr115752.c | 8 ++++++++
  3 files changed, 9 insertions(+), 8 deletions(-)
  create mode 100644 gcc/testsuite/gcc.target/loongarch/pr115752.c

diff --git a/gcc/config/loongarch/loongarch.cc 
b/gcc/config/loongarch/loongarch.cc
index e2ff2af89e2..803ed0575bd 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -6705,7 +6705,7 @@ loongarch_hard_regno_mode_ok_uncached (unsigned int 
regno, machine_mode mode)
        if (mclass == MODE_FLOAT
          || mclass == MODE_COMPLEX_FLOAT
          || mclass == MODE_VECTOR_FLOAT)
-       return size <= UNITS_PER_FPVALUE;
+       return size <= UNITS_PER_HWFPVALUE;

/* Allow integer modes that fit into a single register. We need

         to put integers into FPRs when using instructions like CVT
diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h
index b9323aba394..5efeae53be6 100644
--- a/gcc/config/loongarch/loongarch.h
+++ b/gcc/config/loongarch/loongarch.h
@@ -146,13 +146,6 @@ along with GCC; see the file COPYING3.  If not see
  #define UNITS_PER_HWFPVALUE \
    (TARGET_SOFT_FLOAT ? 0 : UNITS_PER_FP_REG)

-/* The largest size of value that can be held in floating-point

-   registers.  */
-#define UNITS_PER_FPVALUE \
-  (TARGET_SOFT_FLOAT ? 0 \
-   : TARGET_SINGLE_FLOAT ? UNITS_PER_FP_REG \
-                        : LA_LONG_DOUBLE_TYPE_SIZE / BITS_PER_UNIT)
-
  /* The number of bytes in a double.  */
  #define UNITS_PER_DOUBLE (TYPE_PRECISION (double_type_node) / BITS_PER_UNIT)

diff --git a/gcc/testsuite/gcc.target/loongarch/pr115752.c b/gcc/testsuite/gcc.target/loongarch/pr115752.c

new file mode 100644
index 00000000000..df4bae524f7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/pr115752.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+
+long double
+test (long double xx)
+{
+   __asm ("" :: "f"(xx)); /* { dg-error "inconsistent operand constraints in an 
'asm'" } */
+   return xx + 1;
+}