diff options
| author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-23 20:06:46 +0000 |
|---|---|---|
| committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-23 20:06:46 +0000 |
| commit | c736a8377d4c4b4efe1eec1c2d79e18e51dd8ac5 (patch) | |
| tree | a4657d0936e95c87f5855af3090630b9fee49cb9 /gcc/simplify-rtx.c | |
| parent | 8d8dff492b9e21560d2094645b676b952ee720ef (diff) | |
| download | gcc-c736a8377d4c4b4efe1eec1c2d79e18e51dd8ac5.tar.gz | |
gcc:
* reload.c (find_reloads_toplev): Use simplify_gen_subreg.
* simplify-rtx.c (simplify_subreg): When converting to a non-int
mode, try to convert to an integer mode of matching size first.
gcc/testsuite:
* gcc.c-torture/compile/simd-4.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55687 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index d07de68d223..1791f2e4d79 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2347,8 +2347,7 @@ simplify_subreg (outermode, op, innermode, byte) return NULL_RTX; return simplify_subreg (outermode, op, new_mode, subbyte); } - else if (GET_MODE_CLASS (outermode) != MODE_VECTOR_INT - && GET_MODE_CLASS (outermode) != MODE_VECTOR_FLOAT) + else if (GET_MODE_CLASS (outermode) == MODE_INT) /* This shouldn't happen, but let's not do anything stupid. */ return NULL_RTX; } @@ -2387,7 +2386,8 @@ simplify_subreg (outermode, op, innermode, byte) Later it we should move all simplification code here and rewrite GEN_LOWPART_IF_POSSIBLE, GEN_HIGHPART, OPERAND_SUBWORD and friends using SIMPLIFY_SUBREG. */ - if (subreg_lowpart_offset (outermode, innermode) == byte) + if (subreg_lowpart_offset (outermode, innermode) == byte + && GET_CODE (op) != CONST_VECTOR) { rtx new = gen_lowpart_if_possible (outermode, op); if (new) @@ -2406,6 +2406,19 @@ simplify_subreg (outermode, op, innermode, byte) return new; } + if (GET_MODE_CLASS (outermode) != MODE_INT) + { + enum machine_mode new_mode = int_mode_for_mode (outermode); + + if (new_mode != innermode || byte != 0) + { + op = simplify_subreg (new_mode, op, innermode, byte); + if (! op) + return NULL_RTX; + return simplify_subreg (outermode, op, new_mode, 0); + } + } + offset = byte * BITS_PER_UNIT; switch (GET_CODE (op)) { |