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| author | Doug Evans <dje@gnu.org> | 1995-01-14 06:22:17 +0000 |
|---|---|---|
| committer | Doug Evans <dje@gnu.org> | 1995-01-14 06:22:17 +0000 |
| commit | 320cfc3c20d06572ffd935a2199d58b17996fe7c (patch) | |
| tree | 0c7200b1ccd65571267dbfca134f699cc1e2f93e | |
| parent | eb7d5627e12970b3d3f2260d5f4ba90ef3ba42f9 (diff) | |
| download | gcc-320cfc3c20d06572ffd935a2199d58b17996fe7c.zip gcc-320cfc3c20d06572ffd935a2199d58b17996fe7c.tar.gz gcc-320cfc3c20d06572ffd935a2199d58b17996fe7c.tar.bz2 | |
(incoming_reg): Keep regstack aligned to even boundary.
From-SVN: r8759
| -rw-r--r-- | gcc/config/a29k/a29k.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/config/a29k/a29k.c b/gcc/config/a29k/a29k.c index 4c97841..90cdeec 100644 --- a/gcc/config/a29k/a29k.c +++ b/gcc/config/a29k/a29k.c @@ -806,8 +806,13 @@ incoming_reg (start, count) CLEAR_HARD_REG_BIT (call_fixed_reg_set, i); } - /* Shorten the maximum size of the frame. */ - for (i = R_AR (0) - start - count; i < R_AR (0) - start; i++) + /* Shorten the maximum size of the frame. + Remember that R_AR(-1,-2) are place holders for the caller's lr0,lr1. + Make sure to keep the frame rounded to an even boundary. Rounding up + to an 8 byte boundary will use a slot. Otherwise a frame with 121 local + regs and 5 arguments will overrun the stack (121+1 + 5 + 2 > 128). */ + /* ??? An alternative would be to never allocate one reg. */ + for (i = (R_AR (0) - 2 - start - count) & ~1; i < R_AR (0) - 2 - start; i++) { fixed_regs[i] = call_used_regs[i] = call_fixed_regs[i] = 1; SET_HARD_REG_BIT (fixed_reg_set, i); |