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author | Richard Sandiford <richard.sandiford@linaro.org> | 2018-02-05 10:47:56 +0000 |
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committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2018-02-05 10:47:56 +0000 |
commit | 87e176dfd4d2e457353eccd04e99fcb8710fb9f0 (patch) | |
tree | c07a26a19e373447bef2f63b07a0ea30ed4267b1 /gcc | |
parent | b95852cc0000e768b72a5e53ab9d7fd0c81d9cba (diff) | |
download | gcc-87e176dfd4d2e457353eccd04e99fcb8710fb9f0.zip gcc-87e176dfd4d2e457353eccd04e99fcb8710fb9f0.tar.gz gcc-87e176dfd4d2e457353eccd04e99fcb8710fb9f0.tar.bz2 |
Adjust ira_init_register_move_cost comment
2018-02-05 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* ira.c (ira_init_register_move_cost): Adjust comment.
From-SVN: r257385
Diffstat (limited to 'gcc')
-rw-r--r-- | gcc/ChangeLog | 4 | ||||
-rw-r--r-- | gcc/ira.c | 6 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 91969bd..363c617 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2018-02-05 Richard Sandiford <richard.sandiford@linaro.org> + + * ira.c (ira_init_register_move_cost): Adjust comment. + 2018-02-05 Martin Liska <mliska@suse.cz> PR gcov-profile/84137 @@ -1578,8 +1578,10 @@ ira_init_register_move_cost (machine_mode mode) ira_assert (ira_register_move_cost[mode] == NULL && ira_may_move_in_cost[mode] == NULL && ira_may_move_out_cost[mode] == NULL); - /* have_regs_of_mode[mode] might be false because it might be - E_<mode> (see genmodes) of pseudo with <mode>. */ + /* Note that we might be asked about the move costs of modes that + cannot be stored in any hard register, for example if an inline + asm tries to create a register operand with an impossible mode. + We therefore can't assert have_regs_of_mode[mode] here. */ for (cl1 = 0; cl1 < N_REG_CLASSES; cl1++) for (cl2 = 0; cl2 < N_REG_CLASSES; cl2++) { |