diff options
| author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-11 10:32:54 +0000 |
|---|---|---|
| committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-11 10:32:54 +0000 |
| commit | 9426b612787aa49ca83270369785f345c4d9e0eb (patch) | |
| tree | 1600228b687f0973277f1952e5f14849dbbd8053 /gcc/emit-rtl.c | |
| parent | 11cfbfffa61a9bf7753b3281a7723a5ca5faaeeb (diff) | |
| download | gcc-9426b612787aa49ca83270369785f345c4d9e0eb.tar.gz | |
* rtl.h (gen_rtx_CONST_VECTOR): Declare.
* gengenrtl.c (special_rtx): Check for CONST_VECTOR.
* emit-rtl.c (gen_rtx_CONST_VECTOR): New function.
(gen_const_vector_0): Use it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55395 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 0ee4f117f35..eedea4a4e4a 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -5188,10 +5188,26 @@ gen_const_vector_0 (mode) for (i = 0; i < units; ++i) RTVEC_ELT (v, i) = CONST0_RTX (inner); - tem = gen_rtx_CONST_VECTOR (mode, v); + tem = gen_rtx_raw_CONST_VECTOR (mode, v); return tem; } +/* Generate a vector like gen_rtx_raw_CONST_VEC, but use the zero vector when + all elements are zero. */ +rtx +gen_rtx_CONST_VECTOR (mode, v) + enum machine_mode mode; + rtvec v; +{ + rtx inner_zero = CONST0_RTX (GET_MODE_INNER (mode)); + int i; + + for (i = GET_MODE_NUNITS (mode) - 1; i >= 0; i--) + if (RTVEC_ELT (v, i) != inner_zero) + return gen_rtx_raw_CONST_VECTOR (mode, v); + return CONST0_RTX (mode); +} + /* Create some permanent unique rtl objects shared between all functions. LINE_NUMBERS is nonzero if line numbers are to be generated. */ |