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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2003-08-25 20:10:03 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2003-08-25 20:10:03 +0000 |
| commit | c62793785d1e305f11ad72d3bd20820da5d3d7c2 (patch) | |
| tree | 783886cc026411a84f701166a22f4f10daf751c6 | |
| parent | 12ea3302e694f467891a1ff072d5906d266413fc (diff) | |
| download | gcc-c62793785d1e305f11ad72d3bd20820da5d3d7c2.zip gcc-c62793785d1e305f11ad72d3bd20820da5d3d7c2.tar.gz gcc-c62793785d1e305f11ad72d3bd20820da5d3d7c2.tar.bz2 | |
* combine.c (combine_simplify_rtx): Fix RTL sharing bug.
From-SVN: r70778
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/combine.c | 8 |
2 files changed, 9 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ff2e175..019fca2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2003-08-25 Ulrich Weigand <uweigand@de.ibm.com> + + * combine.c (combine_simplify_rtx): Fix RTL sharing bug. + 2003-08-25 Gabriel Dos Reis <gdr@integrable-solutions.net> * pretty-print.h (pp_maybe_newline_and_indent): New macro. diff --git a/gcc/combine.c b/gcc/combine.c index 821acb2..67e4b01 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3636,9 +3636,11 @@ combine_simplify_rtx (rtx x, enum machine_mode op0_mode, int last, return x; /* Simplify the alternative arms; this may collapse the true and - false arms to store-flag values. */ - true_rtx = subst (true_rtx, pc_rtx, pc_rtx, 0, 0); - false_rtx = subst (false_rtx, pc_rtx, pc_rtx, 0, 0); + false arms to store-flag values. Be careful to use copy_rtx + here since true_rtx or false_rtx might share RTL with x as a + result of the if_then_else_cond call above. */ + true_rtx = subst (copy_rtx (true_rtx), pc_rtx, pc_rtx, 0, 0); + false_rtx = subst (copy_rtx (false_rtx), pc_rtx, pc_rtx, 0, 0); /* If true_rtx and false_rtx are not general_operands, an if_then_else is unlikely to be simpler. */ |