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| author | DJ Delorie <dj@redhat.com> | 2010-09-28 18:01:54 -0400 |
|---|---|---|
| committer | DJ Delorie <dj@gcc.gnu.org> | 2010-09-28 18:01:54 -0400 |
| commit | 146456c108b2c395c524f14d08b3c5d3af65e971 (patch) | |
| tree | 75cbd5cf109db0254a9e603e1618f384ecd08374 /gcc/config/m32c/m32c.c | |
| parent | 4e9ca9b0c8ad1cc353c70bb798fc5d2bc18f1013 (diff) | |
| download | gcc-146456c108b2c395c524f14d08b3c5d3af65e971.zip gcc-146456c108b2c395c524f14d08b3c5d3af65e971.tar.gz gcc-146456c108b2c395c524f14d08b3c5d3af65e971.tar.bz2 | |
re PR target/45800 ([M32C] compile error on increment volatile long var)
PR target/45800
* config/m32c/m32c.c (m32c_subreg): Force adjustment of subregs of
volatile MEMs.
From-SVN: r164705
Diffstat (limited to 'gcc/config/m32c/m32c.c')
| -rw-r--r-- | gcc/config/m32c/m32c.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c index 066d1a8..d62b4f2 100644 --- a/gcc/config/m32c/m32c.c +++ b/gcc/config/m32c/m32c.c @@ -3317,7 +3317,19 @@ m32c_subreg (enum machine_mode outer, return gen_rtx_MEM (outer, XEXP (XEXP (x, 0), 0)); if (GET_CODE (x) != REG) - return simplify_gen_subreg (outer, x, inner, byte); + { + rtx r = simplify_gen_subreg (outer, x, inner, byte); + if (GET_CODE (r) == SUBREG + && GET_CODE (x) == MEM + && MEM_VOLATILE_P (x)) + { + /* Volatile MEMs don't get simplified, but we need them to + be. We are little endian, so the subreg byte is the + offset. */ + r = adjust_address (x, outer, byte); + } + return r; + } r = REGNO (x); if (r >= FIRST_PSEUDO_REGISTER || r == AP_REGNO) |