diff options
| author | Roger Sayle <roger@nextmovesoftware.com> | 2021-08-24 22:07:41 +0100 |
|---|---|---|
| committer | Roger Sayle <roger@nextmovesoftware.com> | 2021-08-24 22:07:41 +0100 |
| commit | 81e1894456bc6214c0c42148ff2b1bed142a3545 (patch) | |
| tree | bdea0686960d9771e9106b1c98d306367b18ab8d /gcc | |
| parent | f95946afd160e2a1f4beac4ee5e6d5633307f39a (diff) | |
| download | gcc-81e1894456bc6214c0c42148ff2b1bed142a3545.zip gcc-81e1894456bc6214c0c42148ff2b1bed142a3545.tar.gz gcc-81e1894456bc6214c0c42148ff2b1bed142a3545.tar.bz2 | |
[Committed] PR middle-end/102031: Fix typo/mistake in simplify_truncation patch.
My apologies again. My patch to simplify truncations of SUBREGs in
simplify-rtx.c contained an error where I'd accidentally compared
against a mode instead of the precision of that mode. Grr! It even
survived regression testing on two platforms. Fixed below, and
committed as obvious, after a full "make bootstrap" and "make -k check"
on x86_64-pc-linux-gnu with no new regressions.
2021-08-24 Roger Sayle <roger@nextmovesoftware.com>
gcc/ChangeLog
PR middle-end/102031
* simplify-rtx.c (simplify_truncation): When comparing precisions
use "subreg_prec" variable, not "subreg_mode".
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/simplify-rtx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 8eea9fb..c81e27e 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -841,7 +841,7 @@ simplify_context::simplify_truncation (machine_mode mode, rtx op, { unsigned int int_op_prec = GET_MODE_PRECISION (int_op_mode); unsigned int subreg_prec = GET_MODE_PRECISION (subreg_mode); - if (int_op_prec > subreg_mode) + if (int_op_prec > subreg_prec) { if (int_mode == subreg_mode) return SUBREG_REG (op); @@ -851,7 +851,7 @@ simplify_context::simplify_truncation (machine_mode mode, rtx op, } /* Simplification of (truncate:A (subreg:B X:C 0)) where A is narrower than B and B is narrower than C. */ - else if (int_op_prec < subreg_mode + else if (int_op_prec < subreg_prec && GET_MODE_PRECISION (int_mode) < int_op_prec) return simplify_gen_unary (TRUNCATE, int_mode, SUBREG_REG (op), subreg_mode); |