diff options
Diffstat (limited to 'gcc/config/sh/sh.md')
| -rw-r--r-- | gcc/config/sh/sh.md | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md index 1b2523e3511..203215a1787 100644 --- a/gcc/config/sh/sh.md +++ b/gcc/config/sh/sh.md @@ -11707,12 +11707,16 @@ label: ;; ??? reload might clobber r0 if we use it explicitly in the RTL before ;; reload; using a R0_REGS pseudo reg is likely to give poor code. ;; So we keep the use of r0 hidden in a R0_REGS clobber until after reload. +;; +;; The use on the T_REG in the casesi_worker* patterns links the bounds +;; checking insns and the table memory access. See also PR 69713. (define_insn "casesi_worker_0" [(set (match_operand:SI 0 "register_operand" "=r,r") (unspec:SI [(match_operand:SI 1 "register_operand" "0,r") (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI)) (clobber (match_scratch:SI 3 "=X,1")) - (clobber (match_scratch:SI 4 "=&z,z"))] + (clobber (match_scratch:SI 4 "=&z,z")) + (use (reg:SI T_REG))] "TARGET_SH1" "#") @@ -11721,7 +11725,8 @@ label: (unspec:SI [(match_operand:SI 1 "register_operand" "") (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI)) (clobber (match_scratch:SI 3 "")) - (clobber (match_scratch:SI 4 ""))] + (clobber (match_scratch:SI 4)) + (use (reg:SI T_REG))] "TARGET_SH1 && ! TARGET_SH2 && reload_completed" [(set (reg:SI R0_REG) (unspec:SI [(label_ref (match_dup 2))] UNSPEC_MOVA)) (parallel [(set (match_dup 0) @@ -11739,7 +11744,8 @@ label: (unspec:SI [(match_operand:SI 1 "register_operand" "") (label_ref (match_operand 2 "" ""))] UNSPEC_CASESI)) (clobber (match_scratch:SI 3 "")) - (clobber (match_scratch:SI 4 ""))] + (clobber (match_scratch:SI 4)) + (use (reg:SI T_REG))] "TARGET_SH2 && reload_completed" [(set (reg:SI R0_REG) (unspec:SI [(label_ref (match_dup 2))] UNSPEC_MOVA)) (parallel [(set (match_dup 0) |