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| author | Aldy Hernandez <aldyh@redhat.com> | 2010-03-16 11:33:45 +0000 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@gcc.gnu.org> | 2010-03-16 11:33:45 +0000 |
| commit | 7a1817642b2da6c3163533bf367bf6ba1a878f52 (patch) | |
| tree | b62a2f40c7d39797a2ba9915118b892b93c7ed00 /gcc | |
| parent | 457eeaae81fd615a739dac6844835dee7c9b641c (diff) | |
| download | gcc-7a1817642b2da6c3163533bf367bf6ba1a878f52.zip gcc-7a1817642b2da6c3163533bf367bf6ba1a878f52.tar.gz gcc-7a1817642b2da6c3163533bf367bf6ba1a878f52.tar.bz2 | |
re PR tree-optimization/42917 ("-fcompare-debug failure" with -ftree-loop-linear)
PR tree-optimization/42917
* lambda-code.c (remove_iv): Skip debug statements.
(lambda_loopnest_to_gcc_loopnest): Likewise.
(not_interesting_stmt): Debug statements are not interesting.
Co-Authored-By: Alexandre Oliva <aoliva@redhat.com>
From-SVN: r157477
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/lambda-code.c | 8 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr42917.c | 16 |
3 files changed, 30 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f35a7a7..fda7e80 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2010-03-16 Aldy Hernandez <aldyh@redhat.com> + Alexandre Oliva <aoliva@redhat.com> + + PR tree-optimization/42917 + * lambda-code.c (remove_iv): Skip debug statements. + (lambda_loopnest_to_gcc_loopnest): Likewise. + (not_interesting_stmt): Debug statements are not interesting. + 2010-03-16 Jakub Jelinek <jakub@redhat.com> PR debug/43051 diff --git a/gcc/lambda-code.c b/gcc/lambda-code.c index e5fe629..50f7d47 100644 --- a/gcc/lambda-code.c +++ b/gcc/lambda-code.c @@ -1657,7 +1657,7 @@ remove_iv (gimple iv_stmt) continue; FOR_EACH_IMM_USE_STMT (stmt, imm_iter, arg) - if (stmt != iv_stmt) + if (stmt != iv_stmt && !is_gimple_debug (stmt)) used = true; if (!used) @@ -1839,6 +1839,9 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest, gimple_seq stmts; lambda_body_vector lbv, newlbv; + if (is_gimple_debug (stmt)) + continue; + /* Compute the new expression for the induction variable. */ depth = VEC_length (tree, new_ivs); @@ -1885,7 +1888,8 @@ not_interesting_stmt (gimple stmt) loop, we would have already failed the number of exits tests. */ if (gimple_code (stmt) == GIMPLE_LABEL || gimple_code (stmt) == GIMPLE_GOTO - || gimple_code (stmt) == GIMPLE_COND) + || gimple_code (stmt) == GIMPLE_COND + || is_gimple_debug (stmt)) return true; return false; } diff --git a/gcc/testsuite/gcc.dg/pr42917.c b/gcc/testsuite/gcc.dg/pr42917.c new file mode 100644 index 0000000..d8db32e --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr42917.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -ftree-loop-linear -fcompare-debug -fdump-tree-ltrans" } */ + +extern int A[]; + +void +foo () +{ + int i, j; + for (i = 0; i < 4; i++) + for (j = 255; j >= 0; j--) + A[j] = 0; +} + +/* { dg-final { scan-tree-dump "Successfully transformed loop" "ltrans" } } */ +/* { dg-final { cleanup-tree-dump "ltrans" } } */ |