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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-05-11 16:50:16 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-05-11 16:50:16 -0400 |
| commit | f5fa4507849214668430b923a811b6537c4e0272 (patch) | |
| tree | 432730477ace1e106532e5fb330cdcabf6425f5c /gcc | |
| parent | 13275056a75e6e614ee42c8a93f39fe8184f47e5 (diff) | |
| download | gcc-f5fa4507849214668430b923a811b6537c4e0272.zip gcc-f5fa4507849214668430b923a811b6537c4e0272.tar.gz gcc-f5fa4507849214668430b923a811b6537c4e0272.tar.bz2 | |
(a29k_clobbers_to): New function.
From-SVN: r7276
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/a29k/a29k.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/config/a29k/a29k.c b/gcc/config/a29k/a29k.c index 447751b..08363ed 100644 --- a/gcc/config/a29k/a29k.c +++ b/gcc/config/a29k/a29k.c @@ -802,6 +802,33 @@ incoming_reg (start, count) return R_AR (start); } +/* Add CLOBBERs to CALL_INSN_FUNCTION_USAGE chain of INSN indicating + that LR2 up to, but not including, OP are clobbered. If OP is + zero, indicate all parameter registers are clobbered. */ + +void +a29k_clobbers_to (insn, op) + rtx insn; + rtx op; +{ + int i; + int high_regno; + + if (op == 0) + high_regno = R_LR (18); + else if (GET_CODE (op) != REG || REGNO (op) < R_LR (0) + || REGNO (op) > R_LR (18)) + abort (); + else + high_regno = REGNO (op); + + for (i = R_LR (2); i < high_regno; i++) + CALL_INSN_FUNCTION_USAGE (insn) + = gen_rtx (EXPR_LIST, VOIDmode, + gen_rtx (CLOBBER, VOIDmode, gen_rtx (REG, SImode, i)), + CALL_INSN_FUNCTION_USAGE (insn)); +} + /* These routines are used in finding insns to fill delay slots in the epilogue. */ |