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authorBill Wendling <isanbard@gmail.com>2007-09-22 10:07:00 +0000
committerBill Wendling <isanbard@gmail.com>2007-09-22 10:07:00 +0000
commit31e1e5e37a3bbf2c5267cec874182c203dde2d5b (patch)
tree0844516b6997387b47d1a9278706f94144871e9a /llvm/docs/ExtendingLLVM.html
parentbdd6bd8236abd3ba2d8b3b747ef31d802f7e45c4 (diff)
downloadbcm5719-llvm-31e1e5e37a3bbf2c5267cec874182c203dde2d5b.tar.gz
bcm5719-llvm-31e1e5e37a3bbf2c5267cec874182c203dde2d5b.zip
Validation fixes
llvm-svn: 42230
Diffstat (limited to 'llvm/docs/ExtendingLLVM.html')
-rw-r--r--llvm/docs/ExtendingLLVM.html23
1 files changed, 11 insertions, 12 deletions
diff --git a/llvm/docs/ExtendingLLVM.html b/llvm/docs/ExtendingLLVM.html
index 7505c0eee6f..b072ed3b6e8 100644
--- a/llvm/docs/ExtendingLLVM.html
+++ b/llvm/docs/ExtendingLLVM.html
@@ -107,19 +107,17 @@ support for it. Generally you must do the following steps:</p>
<dt>Add support to the C backend in <tt>lib/Target/CBackend/</tt></dt>
<dd>Depending on the intrinsic, there are a few ways to implement this. For
-most intrinsics, it makes sense to add code to lower your intrinsic in
-<tt>LowerIntrinsicCall</tt> in <tt>lib/CodeGen/IntrinsicLowering.cpp</tt>.
-Second, if it makes sense to lower the intrinsic to an expanded sequence of C
-code in all cases, just emit the expansion in <tt>visitCallInst</tt> in
-<tt>Writer.cpp</tt>. If the intrinsic has some way to express it with GCC
-(or any other compiler) extensions, it can be conditionally supported based on
-the compiler compiling the CBE output (see <tt>llvm.prefetch</tt> for an
-example).
-Third, if the intrinsic really has no way to be lowered, just have the code
-generator emit code that prints an error message and calls abort if executed.
-</dd>
+ most intrinsics, it makes sense to add code to lower your intrinsic in
+ <tt>LowerIntrinsicCall</tt> in <tt>lib/CodeGen/IntrinsicLowering.cpp</tt>.
+ Second, if it makes sense to lower the intrinsic to an expanded sequence of
+ C code in all cases, just emit the expansion in <tt>visitCallInst</tt> in
+ <tt>Writer.cpp</tt>. If the intrinsic has some way to express it with GCC
+ (or any other compiler) extensions, it can be conditionally supported based
+ on the compiler compiling the CBE output (see <tt>llvm.prefetch</tt> for an
+ example). Third, if the intrinsic really has no way to be lowered, just
+ have the code generator emit code that prints an error message and calls
+ abort if executed.</dd>
-<dl>
<dt>Add support to the .td file for the target(s) of your choice in
<tt>lib/Target/*/*.td</tt>.</dt>
@@ -127,6 +125,7 @@ generator emit code that prints an error message and calls abort if executed.
the intrinsic, though it may obviously require adding the instructions you
want to generate as well. There are lots of examples in the PowerPC and X86
backend to follow.</dd>
+</dl>
</div>
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