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authorJuzhe-Zhong <juzhe.zhong@rivai.ai>2023-10-26 11:42:20 +0800
committerLehua Ding <lehua.ding@rivai.ai>2023-10-26 18:01:10 +0800
commita4ca8691333344cecc595d1af8b21e51f588e2f2 (patch)
treeef779414c83facaff3b7a89916ca5dad45202f70
parentd1bb9569d7030490fe7bb35af432f934560d689d (diff)
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DOC: Update COND_LEN document
gcc/ChangeLog: * doc/md.texi: Adapt COND_LEN pseudo code.
-rw-r--r--gcc/doc/md.texi18
1 files changed, 12 insertions, 6 deletions
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index daa318e..fab2513 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -7341,8 +7341,10 @@ store the result in operand 0, otherwise store operand 2 in operand 0.
The operation only works for the operands are vectors.
@smallexample
-for (i = 0; i < ops[4] + ops[5]; i++)
- op0[i] = op1[i] ? @var{op} op2[i] : op3[i];
+for (i = 0; i < GET_MODE_NUNITS (@var{m}); i++)
+ op0[i] = (i < ops[4] + ops[5] && op1[i]
+ ? @var{op} op2[i]
+ : op3[i]);
@end smallexample
where, for example, @var{op} is @code{~} for @samp{cond_len_one_cmpl@var{mode}}.
@@ -7403,8 +7405,10 @@ store the result in operand 0, otherwise store operand 4 in operand 0.
The operation only works for the operands are vectors.
@smallexample
-for (i = 0; i < ops[5] + ops[6]; i++)
- op0[i] = op1[i] ? op2[i] @var{op} op3[i] : op4[i];
+for (i = 0; i < GET_MODE_NUNITS (@var{m}); i++)
+ op0[i] = (i < ops[5] + ops[6] && op1[i]
+ ? op2[i] @var{op} op3[i]
+ : op4[i]);
@end smallexample
where, for example, @var{op} is @code{+} for @samp{cond_len_add@var{mode}}.
@@ -7436,8 +7440,10 @@ takes 3 operands rather than two. For example, the vector form of
@samp{cond_len_fma@var{mode}} is equivalent to:
@smallexample
-for (i = 0; i < ops[6] + ops[7]; i++)
- op0[i] = op1[i] ? fma (op2[i], op3[i], op4[i]) : op5[i];
+for (i = 0; i < GET_MODE_NUNITS (@var{m}); i++)
+ op0[i] = (i < ops[6] + ops[7] && op1[i]
+ ? fma (op2[i], op3[i], op4[i])
+ : op5[i]);
@end smallexample
@cindex @code{neg@var{mode}cc} instruction pattern