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| author | Jakub Jelinek <jakub@redhat.com> | 2009-12-23 18:04:07 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-12-23 18:04:07 +0100 |
| commit | 7f7211fb3fafede9ca157d5bceb3e7a0bc9cc74b (patch) | |
| tree | f98113a149d7e5bfc953898164d3d9844ea58714 /gcc | |
| parent | 374b9cb810f4c44bd7e66078694dcbeb3d4b40cd (diff) | |
| download | gcc-7f7211fb3fafede9ca157d5bceb3e7a0bc9cc74b.zip gcc-7f7211fb3fafede9ca157d5bceb3e7a0bc9cc74b.tar.gz gcc-7f7211fb3fafede9ca157d5bceb3e7a0bc9cc74b.tar.bz2 | |
re PR rtl-optimization/42475 (ICE at -O1 and above: internal compiler error: in simplify_subreg, at simplify-rtx.c:4954)
PR rtl-optimization/42475
* combine.c (make_compound_operation) <case SUBREG>: Use mode of
SUBREG_REG (x) instead of tem's mode.
* gcc.dg/pr42475.c: New test.
From-SVN: r155430
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr42475.c | 28 |
4 files changed, 42 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 42c4e1c..f60a33c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,10 @@ 2009-12-23 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/42475 + * combine.c (make_compound_operation) <case SUBREG>: Use mode of + SUBREG_REG (x) instead of tem's mode. + +2009-12-23 Jakub Jelinek <jakub@redhat.com> Cary Coutant <ccoutant@google.com> PR debug/42454 diff --git a/gcc/combine.c b/gcc/combine.c index 2c60ae5..5ae557c 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7306,15 +7306,14 @@ make_compound_operation (rtx x, enum rtx_code in_code) tem = make_compound_operation (SUBREG_REG (x), in_code); { - rtx simplified; - simplified = simplify_subreg (GET_MODE (x), tem, GET_MODE (tem), - SUBREG_BYTE (x)); + rtx simplified = simplify_subreg (mode, tem, GET_MODE (SUBREG_REG (x)), + SUBREG_BYTE (x)); if (simplified) tem = simplified; if (GET_CODE (tem) != GET_CODE (SUBREG_REG (x)) - && GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (tem)) + && GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))) && subreg_lowpart_p (x)) { rtx newer = force_to_mode (tem, mode, ~(HOST_WIDE_INT) 0, diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 83144a2..98d85f4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,4 +1,9 @@ 2009-12-23 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/42475 + * gcc.dg/pr42475.c: New test. + +2009-12-23 Jakub Jelinek <jakub@redhat.com> Cary Coutant <ccoutant@google.com> PR debug/42454 diff --git a/gcc/testsuite/gcc.dg/pr42475.c b/gcc/testsuite/gcc.dg/pr42475.c new file mode 100644 index 0000000..a5edffa --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr42475.c @@ -0,0 +1,28 @@ +/* PR rtl-optimization/42475 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +typedef struct { float x, y; } B; +typedef struct { float z; } C; +typedef struct { B b; C c; } D; + +B +foo (float x, float y) +{ + B b = { .x = x, .y = y }; + return b; +} + +B +bar (B b, B y) +{ + return foo (y.x + b.x, b.y); +} + +B +baz (D p) +{ + D d = { }; + B y = bar (foo (0, (p.c.z) / 2), d.b); + return y; +} |