https://gcc.gnu.org/g:243e634f5bee3912685756f31d3648df73fa6938
commit r14-11456-g243e634f5bee3912685756f31d3648df73fa6938
Author: Lulu Cheng <chengl...@loongson.cn>
Date: Sat Mar 22 14:37:01 2025 +0800
LoongArch: Support Q suffix for __float128.
In r14-3635 supports `__float128`, but does not support the 'q/Q' suffix.
PR target/119408
gcc/ChangeLog:
* config/loongarch/loongarch.cc
(loongarch_c_mode_for_suffix): New.
(TARGET_C_MODE_FOR_SUFFIX): Define.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/pr119408.c: New test.
(cherry picked from commit 7c8da04c412ed4f54596f10434aa46592d000fbf)
Diff:
---
gcc/config/loongarch/loongarch.cc | 13 +++++++++++++
gcc/testsuite/gcc.target/loongarch/pr119408.c | 12 ++++++++++++
2 files changed, 25 insertions(+)
diff --git a/gcc/config/loongarch/loongarch.cc
b/gcc/config/loongarch/loongarch.cc
index 4b456e3ef1f5..afedc8e33e44 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -11004,6 +11004,16 @@ loongarch_asm_code_end (void)
#undef DUMP_FEATURE
}
+/* Target hook for c_mode_for_suffix. */
+static machine_mode
+loongarch_c_mode_for_suffix (char suffix)
+{
+ if (suffix == 'q')
+ return TFmode;
+
+ return VOIDmode;
+}
+
/* Initialize the GCC target structure. */
#undef TARGET_ASM_ALIGNED_HI_OP
#define TARGET_ASM_ALIGNED_HI_OP "\t.half\t"
@@ -11263,6 +11273,9 @@ loongarch_asm_code_end (void)
#define TARGET_VECTORIZE_SUPPORT_VECTOR_MISALIGNMENT \
loongarch_builtin_support_vector_misalignment
+#undef TARGET_C_MODE_FOR_SUFFIX
+#define TARGET_C_MODE_FOR_SUFFIX loongarch_c_mode_for_suffix
+
struct gcc_target targetm = TARGET_INITIALIZER;
#include "gt-loongarch.h"
diff --git a/gcc/testsuite/gcc.target/loongarch/pr119408.c
b/gcc/testsuite/gcc.target/loongarch/pr119408.c
new file mode 100644
index 000000000000..f46399aa0b59
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/pr119408.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wno-pedantic" } */
+
+__float128 a;
+__float128 b;
+void
+test (void)
+{
+ a = 1.11111111Q;
+ b = 1.434345q;
+}
+
