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Expose "noduplicate" attribute as a property for intrinsics.

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The "noduplicate" function attribute exists to prevent certain optimizations
from duplicating calls to the function. This is important on platforms where
certain function call duplications are unsafe (for example execution barriers
for CUDA and OpenCL).

This patch makes it possible to specify intrinsics as "noduplicate" and
translates that to the appropriate function attribute.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204200 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Bendersky
2014-03-18 23:51:07 +00:00
parent cae25dcbf7
commit 21354ec60d
7 changed files with 109 additions and 6 deletions
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utils/TableGen/CodeGenTarget.cpp
+3
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@@ -446,6 +446,7 @@ CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
isCommutative = false;
canThrow = false;
isNoReturn = false;
isNoDuplicate = false;
if (DefName.size() <= 4 ||
std::string(DefName.begin(), DefName.begin() + 4) != "int_")
@@ -570,6 +571,8 @@ CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
isCommutative = true;
else if (Property->getName() == "Throws")
canThrow = true;
else if (Property->getName() == "IntrNoDuplicate")
isNoDuplicate = true;
else if (Property->getName() == "IntrNoReturn")
isNoReturn = true;
else if (Property->isSubClassOf("NoCapture")) {