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| author | Jakub Jelinek <jakub@redhat.com> | 2004-11-27 10:39:00 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2004-11-27 10:39:00 +0100 |
| commit | b78b8bd83ec46cfbed0addd238d9dc6f831959b1 (patch) | |
| tree | 3c855f7b17093b28bc0452f6bb3ffd09773bdd73 /gcc | |
| parent | fcfbdb74da074a4f5cbe0729db5437b11870c32e (diff) | |
| download | gcc-b78b8bd83ec46cfbed0addd238d9dc6f831959b1.zip gcc-b78b8bd83ec46cfbed0addd238d9dc6f831959b1.tar.gz gcc-b78b8bd83ec46cfbed0addd238d9dc6f831959b1.tar.bz2 | |
re PR rtl-optimization/17825 (ICE in reg_bitfield_target_p)
PR rtl-optimization/17825
* combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new)
or not.
* gcc.c-torture/compile/20041119-1.c: New test.
From-SVN: r91369
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/20041119-1.c | 30 |
4 files changed, 44 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 857aa8f..c1fe9b7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2004-11-27 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/17825 + * combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new) + or not. + 2004-11-27 Alan Modra <amodra@bigpond.net.au> PR target/12769 diff --git a/gcc/combine.c b/gcc/combine.c index ce198bb..181a33e 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3556,10 +3556,10 @@ subst (rtx x, rtx from, rtx to, int in_dest, int unique_copy) /* If this is a register being set, ignore it. */ new = XEXP (x, i); if (in_dest - && (code == SUBREG || code == STRICT_LOW_PART - || code == ZERO_EXTRACT) && i == 0 - && REG_P (new)) + && (((code == SUBREG || code == ZERO_EXTRACT) + && REG_P (new)) + || code == STRICT_LOW_PART)) ; else if (COMBINE_RTX_EQUAL_P (XEXP (x, i), from)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 912c9b3..dc3edee 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2004-11-27 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/17825 + * gcc.c-torture/compile/20041119-1.c: New test. + 2004-11-27 John David Anglin <dave.anglin@nrc-cnrc.gc.ca> * lib/target-libpath.exp (restore_ld_library_path_env_vars): diff --git a/gcc/testsuite/gcc.c-torture/compile/20041119-1.c b/gcc/testsuite/gcc.c-torture/compile/20041119-1.c new file mode 100644 index 0000000..3e0e565 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/20041119-1.c @@ -0,0 +1,30 @@ +/* PR rtl-optimization/17825 */ +#ifdef __i386__ +register unsigned int reg __asm ("esi"); +#elif defined __x86_64__ +register unsigned int reg __asm ("r14"); +#else +unsigned int reg; +#endif + +struct S +{ + unsigned int h[8]; +} *b; +unsigned int c; +void foo (int); + +void +bar (void) +{ + unsigned int j, k, l, m; + + j = (reg & 0xffff) | ((b->h[2] & 0xffff) << 16); + k = c & 0xffff; + if (k == 0) + foo (0); + l = (j / k) & 0xffff; + m = (j % k) & 0xffff; + reg = (reg & 0xffff0000) | l; + b->h[2] = (b->h[2] & 0xffff0000) | m; +} |