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| author | raksit <raksit@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-01-11 04:20:32 +0000 |
|---|---|---|
| committer | raksit <raksit@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-01-11 04:20:32 +0000 |
| commit | 5bed1dca2160c7761b2274c33088cece233d5ac8 (patch) | |
| tree | c20963f4cf9d25ceb53cacc6ed4dbca6306ab622 | |
| parent | 8fbaeb05fd21c2467b03a3c5ea96e8b6678f1f8e (diff) | |
| download | gcc-5bed1dca2160c7761b2274c33088cece233d5ac8.tar.gz | |
gcc/ChangeLog
PR rtl-optimization/27971
* combine.c (find_split_point): introduced a new split for certain
types of mem rtx.
gcc/testsuite/ChangeLog
PR rtl-optimization/27971
* gcc.target/i386/pr27971.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@131460 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 9 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr27971.c | 12 |
4 files changed, 32 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5a47a8c611c..0e5dbd6cf5b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-01-10 Raksit Ashok <raksit@google.com> + + PR rtl-optimization/27971 + * combine.c (find_split_point): introduced a new split for certain + types of mem rtx. + 2008-01-10 DJ Delorie <dj@redhat.com> * config/m32c/m32c.c (m32c_hard_regno_nregs_1): Renamed from... diff --git a/gcc/combine.c b/gcc/combine.c index b3d064d3f11..43623a4fbc4 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3967,6 +3967,15 @@ find_split_point (rtx *loc, rtx insn) && OBJECT_P (SUBREG_REG (XEXP (XEXP (x, 0), 0))))) return &XEXP (XEXP (x, 0), 0); } + + /* If we have a PLUS whose first operand is complex, try computing it + separately by making a split there. */ + if (GET_CODE (XEXP (x, 0)) == PLUS + && ! memory_address_p (GET_MODE (x), XEXP (x, 0)) + && ! OBJECT_P (XEXP (XEXP (x, 0), 0)) + && ! (GET_CODE (XEXP (XEXP (x, 0), 0)) == SUBREG + && OBJECT_P (SUBREG_REG (XEXP (XEXP (x, 0), 0))))) + return &XEXP (XEXP (x, 0), 0); break; case SET: diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 7546770c97b..1e1207b1bd6 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-01-10 Raksit Ashok <raksit@google.com> + + PR rtl-optimization/27971 + * gcc.target/i386/pr27971.c: New testcase. + 2008-01-10 Paul Thomas <pault@gcc.gnu.org> PR fortran/34396 diff --git a/gcc/testsuite/gcc.target/i386/pr27971.c b/gcc/testsuite/gcc.target/i386/pr27971.c new file mode 100644 index 00000000000..8c706adda59 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr27971.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +unsigned array[4]; + +unsigned foo(unsigned long x) +{ + return array[(x>>2)&3ul]; +} + +/* { dg-final { scan-assembler-not "shr\[^\\n\]*2" } } */ +/* { dg-final { scan-assembler "and\[^\\n\]*12" } } */ |