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-rw-r--r--gcc/config/sh/sh.md14
1 files changed, 12 insertions, 2 deletions
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index b5b0f95..9fa835b 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -10476,12 +10476,16 @@ label:
(const_string "single") (const_string "double")))
(set_attr "type" "jump_ind")])
+;; sibcall_value_pcrel used to have a =&k clobber for the scratch register
+;; that it needs for the branch address. This causes troubles when there
+;; is a big overlap of argument and return value registers. Hence, use a
+;; fixed call clobbered register for the address. See also PR 67260.
(define_insn_and_split "sibcall_value_pcrel"
[(set (match_operand 0 "" "=rf")
(call (mem:SI (match_operand:SI 1 "symbol_ref_operand" ""))
(match_operand 2 "" "")))
(use (reg:SI FPSCR_MODES_REG))
- (clobber (match_scratch:SI 3 "=&k"))
+ (clobber (reg:SI R1_REG))
(return)]
"TARGET_SH2 && !TARGET_FDPIC"
"#"
@@ -10491,6 +10495,8 @@ label:
rtx lab = PATTERN (gen_call_site ());
rtx call_insn;
+ operands[3] = gen_rtx_REG (SImode, R1_REG);
+
sh_expand_sym_label2reg (operands[3], operands[1], lab, true);
call_insn = emit_call_insn (gen_sibcall_valuei_pcrel (operands[0],
operands[3],
@@ -10505,13 +10511,15 @@ label:
(const_string "single") (const_string "double")))
(set_attr "type" "jump_ind")])
+;; Like for sibcall_value_pcrel, use a fixed call clobbered register for
+;; the branch address.
(define_insn_and_split "sibcall_value_pcrel_fdpic"
[(set (match_operand 0 "" "=rf")
(call (mem:SI (match_operand:SI 1 "symbol_ref_operand"))
(match_operand 2)))
(use (reg:SI FPSCR_MODES_REG))
(use (reg:SI PIC_REG))
- (clobber (match_scratch:SI 3 "=k"))
+ (clobber (reg:SI R1_REG))
(return)]
"TARGET_SH2 && TARGET_FDPIC"
"#"
@@ -10520,6 +10528,8 @@ label:
{
rtx lab = PATTERN (gen_call_site ());
+ operands[3] = gen_rtx_REG (SImode, R1_REG);
+
sh_expand_sym_label2reg (operands[3], operands[1], lab, true);
rtx i = emit_call_insn (gen_sibcall_valuei_pcrel_fdpic (operands[0],
operands[3],