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| author | Richard Biener <rguenther@suse.de> | 2023-07-05 08:53:01 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-07-05 09:44:24 +0200 |
| commit | 9fed1ec67f83f3c56c030fe2a501b01ceb6e243f (patch) | |
| tree | f6f0496a6c5dff055344397f873387139b27c2b4 /gcc | |
| parent | 2d11c99dfca3cc603dbbfafb3afc41689a68e40f (diff) | |
| download | gcc-9fed1ec67f83f3c56c030fe2a501b01ceb6e243f.zip gcc-9fed1ec67f83f3c56c030fe2a501b01ceb6e243f.tar.gz gcc-9fed1ec67f83f3c56c030fe2a501b01ceb6e243f.tar.bz2 | |
middle-end/110541 - VEC_PERM_EXPR documentation is off
The following adjusts the tree.def documentation about VEC_PERM_EXPR
which wasn't adjusted when the restrictions of permutes with constant
mask were relaxed.
PR middle-end/110541
* tree.def (VEC_PERM_EXPR): Adjust documentation to reflect
reality.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/tree.def | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index 1fc2ca7..be94b7e 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -565,13 +565,18 @@ DEFTREECODE (VEC_COND_EXPR, "vec_cond_expr", tcc_expression, 3) N = length(mask) foreach i in N: - M = mask[i] % (2*N) - A = M < N ? v0[M] : v1[M-N] + M = mask[i] % (length(v0) + length(v1)) + A[i] = M < length(v0) ? v0[M] : v1[M - length(v0)] - V0 and V1 are vectors of the same type. MASK is an integer-typed - vector. The number of MASK elements must be the same with the - number of elements in V0 and V1. The size of the inner type - of the MASK and of the V0 and V1 must be the same. + V0 and V1 are vectors of the same type. + + When MASK is not constant: + MASK is an integer-typed vector. The number of MASK elements must + be the same as the number of elements in V0 and V1. The size of + the inner type of the MASK and of the V0 and V1 must be the same. + + When MASK is constant: + MASK is an integer-typed vector. */ DEFTREECODE (VEC_PERM_EXPR, "vec_perm_expr", tcc_expression, 3) |