https://gcc.gnu.org/g:d0110185eb78f14a8e485f410bee237c9c71548d
commit r15-8284-gd0110185eb78f14a8e485f410bee237c9c71548d
Author: Xi Ruoyao <xry...@xry111.site>
Date: Sun Mar 16 14:19:53 2025 +0800
LoongArch: Add ABI names for FPR
We already allow the ABI names for GPR in inline asm clobber list, so
for consistency allow the ABI names for FPR as well.
Reported-by: Yao Zi <zi...@disroot.org>
gcc/ChangeLog:
* config/loongarch/loongarch.h (ADDITIONAL_REGISTER_NAMES): Add
fa0-fa7, ft0-ft16, and fs0-fs7.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/regname-float-abi.c: New test.
Diff:
---
gcc/config/loongarch/loongarch.h | 32 ++++++++++++++++++++++
.../gcc.target/loongarch/regname-float-abi.c | 14 ++++++++++
2 files changed, 46 insertions(+)
diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h
index 42a38a44efeb..d8977634b71a 100644
--- a/gcc/config/loongarch/loongarch.h
+++ b/gcc/config/loongarch/loongarch.h
@@ -941,6 +941,38 @@ typedef struct {
{ "s6", 29 + GP_REG_FIRST }, \
{ "s7", 30 + GP_REG_FIRST }, \
{ "s8", 31 + GP_REG_FIRST }, \
+ { "fa0", 0 + FP_REG_FIRST }, \
+ { "fa1", 1 + FP_REG_FIRST }, \
+ { "fa2", 2 + FP_REG_FIRST }, \
+ { "fa3", 3 + FP_REG_FIRST }, \
+ { "fa4", 4 + FP_REG_FIRST }, \
+ { "fa5", 5 + FP_REG_FIRST }, \
+ { "fa6", 6 + FP_REG_FIRST }, \
+ { "fa7", 7 + FP_REG_FIRST }, \
+ { "ft0", 8 + FP_REG_FIRST }, \
+ { "ft1", 9 + FP_REG_FIRST }, \
+ { "ft2", 10 + FP_REG_FIRST }, \
+ { "ft3", 11 + FP_REG_FIRST }, \
+ { "ft4", 12 + FP_REG_FIRST }, \
+ { "ft5", 13 + FP_REG_FIRST }, \
+ { "ft6", 14 + FP_REG_FIRST }, \
+ { "ft7", 15 + FP_REG_FIRST }, \
+ { "ft8", 16 + FP_REG_FIRST }, \
+ { "ft9", 17 + FP_REG_FIRST }, \
+ { "ft10", 18 + FP_REG_FIRST }, \
+ { "ft11", 19 + FP_REG_FIRST }, \
+ { "ft12", 20 + FP_REG_FIRST }, \
+ { "ft13", 21 + FP_REG_FIRST }, \
+ { "ft14", 22 + FP_REG_FIRST }, \
+ { "ft15", 23 + FP_REG_FIRST }, \
+ { "fs0", 24 + FP_REG_FIRST }, \
+ { "fs1", 25 + FP_REG_FIRST }, \
+ { "fs2", 26 + FP_REG_FIRST }, \
+ { "fs3", 27 + FP_REG_FIRST }, \
+ { "fs4", 28 + FP_REG_FIRST }, \
+ { "fs5", 29 + FP_REG_FIRST }, \
+ { "fs6", 30 + FP_REG_FIRST }, \
+ { "fs7", 31 + FP_REG_FIRST }, \
{ "v0", 4 + GP_REG_FIRST }, \
{ "v1", 5 + GP_REG_FIRST }, \
{ "vr0", 0 + FP_REG_FIRST }, \
diff --git a/gcc/testsuite/gcc.target/loongarch/regname-float-abi.c
b/gcc/testsuite/gcc.target/loongarch/regname-float-abi.c
new file mode 100644
index 000000000000..2224304fcca6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/loongarch/regname-float-abi.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-Wno-pedantic -std=gnu90 -mfpu=64" } */
+
+register double fs0 asm("fs0"); /* { dg-note "conflicts with 'fs0'" } */
+register double f24 asm("$f24"); /* { dg-warning "register of 'f24' used for
multiple global register variables" } */
+
+void
+test (void)
+{
+ asm("" ::: "fa0", "fa1", "fa2", "fa3", "fa4", "fa5", "fa6", "fa7",
+ "ft0", "ft1", "ft2", "ft3", "ft4", "ft5", "ft6", "ft7",
+ "ft8", "ft9", "ft10", "ft11", "ft12", "ft13", "ft14", "ft15",
+ "fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7");
+}
