Hi,
Missing machine mode for the unspec_volatile operand of get_fcsr
patterns causes an ICE in simplify_subreg on n64 ABI.
This adds the missing machine modes and a new test.
Tested on mips64el-mti-linux-gnu.
Ok for trunk and possibly backport?
Cheers,
Mihailo
gcc/
* config/mips/mips.md (mips_get_fcsr, *mips_get_fcsr): Use SI
machine mode for unspec_volatile operand.
* testsuite/gcc.target/mips/get-fcsr-3.c: New test.
---
gcc/config/mips/mips.md | 4 ++--
gcc/testsuite/gcc.target/mips/get-fcsr-3.c | 9 +++++++++
2 files changed, 11 insertions(+), 2 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/mips/get-fcsr-3.c
diff --git a/gcc/config/mips/mips.md b/gcc/config/mips/mips.md
index e17b1d5..4ad5c62 100644
--- a/gcc/config/mips/mips.md
+++ b/gcc/config/mips/mips.md
@@ -7588,7 +7588,7 @@
;; __builtin_mips_get_fcsr: move the FCSR into operand 0.
(define_expand "mips_get_fcsr"
[(set (match_operand:SI 0 "register_operand")
- (unspec_volatile [(const_int 0)] UNSPEC_GET_FCSR))]
+ (unspec_volatile:SI [(const_int 0)] UNSPEC_GET_FCSR))]
"TARGET_HARD_FLOAT_ABI"
{
if (TARGET_MIPS16)
@@ -7600,7 +7600,7 @@
(define_insn "*mips_get_fcsr"
[(set (match_operand:SI 0 "register_operand" "=d")
- (unspec_volatile [(const_int 0)] UNSPEC_GET_FCSR))]
+ (unspec_volatile:SI [(const_int 0)] UNSPEC_GET_FCSR))]
"TARGET_HARD_FLOAT"
"cfc1\t%0,$31")
diff --git a/gcc/testsuite/gcc.target/mips/get-fcsr-3.c
b/gcc/testsuite/gcc.target/mips/get-fcsr-3.c
new file mode 100644
index 0000000..7bb97b6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/get-fcsr-3.c
@@ -0,0 +1,9 @@
+/* { dg-options "-mabi=64 -mhard-float" } */
+
+NOMIPS16 unsigned int
+foo (void)
+{
+ return __builtin_mips_get_fcsr () & 0x1;
+}
+
+/* { dg-final { scan-assembler "cfc1" } } */
--
2.7.4
