* [COMMITTED] gcc: xtensa: fix PR target/108876
@ 2023-02-21 21:56 Max Filippov
0 siblings, 0 replies; only message in thread
From: Max Filippov @ 2023-02-21 21:56 UTC (permalink / raw)
To: gcc-patches; +Cc: Takayuki 'January June' Suwa, Max Filippov
gcc/
PR target/108876
* config/xtensa/xtensa.cc (xtensa_expand_epilogue): Drop emit_use
for A0_REG.
* config/xtensa/xtensa.md (sibcall, sibcall_internal)
(sibcall_value, sibcall_value_internal): Add 'use' expression
for A0_REG.
---
gcc/config/xtensa/xtensa.cc | 2 --
gcc/config/xtensa/xtensa.md | 20 +++++++++++++-------
2 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc
index d0320efe21d4..5c1c713e122d 100644
--- a/gcc/config/xtensa/xtensa.cc
+++ b/gcc/config/xtensa/xtensa.cc
@@ -3548,8 +3548,6 @@ xtensa_expand_epilogue (bool sibcall_p)
gen_frame_mem (SImode, x));
}
}
- if (sibcall_p)
- emit_use (gen_rtx_REG (SImode, A0_REG));
if (cfun->machine->current_frame_size > 0)
{
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index d3996b26cb5c..b8a8aaf97640 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -2369,8 +2369,10 @@
(set_attr "length" "3")])
(define_expand "sibcall"
- [(call (match_operand 0 "memory_operand" "")
- (match_operand 1 "" ""))]
+ [(parallel [
+ (call (match_operand 0 "memory_operand" "")
+ (match_operand 1 "" ""))
+ (use (reg:SI A0_REG))])]
"!TARGET_WINDOWED_ABI"
{
xtensa_prepare_expand_call (0, operands);
@@ -2378,7 +2380,8 @@
(define_insn "sibcall_internal"
[(call (mem:SI (match_operand:SI 0 "call_insn_operand" "nic"))
- (match_operand 1 "" "i"))]
+ (match_operand 1 "" "i"))
+ (use (reg:SI A0_REG))]
"!TARGET_WINDOWED_ABI && SIBLING_CALL_P (insn)"
{
return xtensa_emit_sibcall (0, operands);
@@ -2388,9 +2391,11 @@
(set_attr "length" "3")])
(define_expand "sibcall_value"
- [(set (match_operand 0 "register_operand" "")
- (call (match_operand 1 "memory_operand" "")
- (match_operand 2 "" "")))]
+ [(parallel [
+ (set (match_operand 0 "register_operand" "")
+ (call (match_operand 1 "memory_operand" "")
+ (match_operand 2 "" "")))
+ (use (reg:SI A0_REG))])]
"!TARGET_WINDOWED_ABI"
{
xtensa_prepare_expand_call (1, operands);
@@ -2399,7 +2404,8 @@
(define_insn "sibcall_value_internal"
[(set (match_operand 0 "register_operand" "=a")
(call (mem:SI (match_operand:SI 1 "call_insn_operand" "nic"))
- (match_operand 2 "" "i")))]
+ (match_operand 2 "" "i")))
+ (use (reg:SI A0_REG))]
"!TARGET_WINDOWED_ABI && SIBLING_CALL_P (insn)"
{
return xtensa_emit_sibcall (1, operands);
--
2.30.2
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