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| author | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-15 17:37:51 +0000 |
|---|---|---|
| committer | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-05-15 17:37:51 +0000 |
| commit | 3b5f953ea920b85e913488f6e9f48d5e88614050 (patch) | |
| tree | 1b08f512804bdd6979b2acc9173efe1d13a6f613 /gcc/loop.c | |
| parent | e8832c238ee8feb3b05a9f60c15b05305fb58622 (diff) | |
| download | gcc-3b5f953ea920b85e913488f6e9f48d5e88614050.tar.gz | |
Patch from Bill Moyer.
* loop.c (basic_induction_var): Added test preventing
CCmode parameter passed to convert_modes().
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19779 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index 9625febe054..ce0b9b02631 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -5257,7 +5257,12 @@ basic_induction_var (x, mode, dest_reg, p, inc_val, mult_val) case CONST_INT: case SYMBOL_REF: case CONST: - if (loops_enclosed == 1) + /* convert_modes aborts if we try to convert to or from CCmode, so just + exclude that case. It is very unlikely that a condition code value + would be a useful iterator anyways. */ + if (loops_enclosed == 1 + && GET_MODE_CLASS (mode) != MODE_CC + && GET_MODE_CLASS (GET_MODE (dest_reg)) != MODE_CC) { /* Possible bug here? Perhaps we don't know the mode of X. */ *inc_val = convert_modes (GET_MODE (dest_reg), mode, x, 0); |