[llvm-commits] [llvm] r61627 - /llvm/trunk/include/llvm/Function.h
Nick Lewycky
nicholas at mxc.ca
Sun Jan 4 10:21:36 PST 2009
Author: nicholas
Date: Sun Jan 4 12:21:35 2009
New Revision: 61627
URL: http://llvm.org/viewvc/llvm-project?rev=61627&view=rev
Log:
Add utility functions for marking parameters as noalias or nocapture.
Clean up some of the existing code by making it use hasFnAttr/addFnAttr
and round it off by creating removeFnAttr.
Modified:
llvm/trunk/include/llvm/Function.h
Modified: llvm/trunk/include/llvm/Function.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Function.h?rev=61627&r1=61626&r2=61627&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Function.h (original)
+++ llvm/trunk/include/llvm/Function.h Sun Jan 4 12:21:35 2009
@@ -161,6 +161,13 @@
addAttribute(~0U, N);
}
+ /// removeFnAttr - Remove function attributes from this function.
+ ///
+ void removeFnAttr(Attributes N) {
+ // Function Attributes are stored at ~0 index
+ removeAttribute(~0U, N);
+ }
+
/// hasGC/getGC/setGC/clearGC - The name of the garbage collection algorithm
/// to use during code generation.
bool hasGC() const;
@@ -186,38 +193,38 @@
/// @brief Determine if the function does not access memory.
bool doesNotAccessMemory() const {
- return paramHasAttr(~0, Attribute::ReadNone);
+ return hasFnAttr(Attribute::ReadNone);
}
void setDoesNotAccessMemory(bool DoesNotAccessMemory = true) {
- if (DoesNotAccessMemory) addAttribute(~0, Attribute::ReadNone);
- else removeAttribute(~0, Attribute::ReadNone);
+ if (DoesNotAccessMemory) addFnAttr(Attribute::ReadNone);
+ else removeFnAttr(Attribute::ReadNone);
}
/// @brief Determine if the function does not access or only reads memory.
bool onlyReadsMemory() const {
- return doesNotAccessMemory() || paramHasAttr(~0, Attribute::ReadOnly);
+ return doesNotAccessMemory() || hasFnAttr(Attribute::ReadOnly);
}
void setOnlyReadsMemory(bool OnlyReadsMemory = true) {
- if (OnlyReadsMemory) addAttribute(~0, Attribute::ReadOnly);
- else removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
+ if (OnlyReadsMemory) addFnAttr(Attribute::ReadOnly);
+ else removeFnAttr(Attribute::ReadOnly | Attribute::ReadNone);
}
/// @brief Determine if the function cannot return.
bool doesNotReturn() const {
- return paramHasAttr(~0, Attribute::NoReturn);
+ return hasFnAttr(Attribute::NoReturn);
}
void setDoesNotReturn(bool DoesNotReturn = true) {
- if (DoesNotReturn) addAttribute(~0, Attribute::NoReturn);
- else removeAttribute(~0, Attribute::NoReturn);
+ if (DoesNotReturn) addFnAttr(Attribute::NoReturn);
+ else removeFnAttr(Attribute::NoReturn);
}
/// @brief Determine if the function cannot unwind.
bool doesNotThrow() const {
- return paramHasAttr(~0, Attribute::NoUnwind);
+ return hasFnAttr(Attribute::NoUnwind);
}
void setDoesNotThrow(bool DoesNotThrow = true) {
- if (DoesNotThrow) addAttribute(~0, Attribute::NoUnwind);
- else removeAttribute(~0, Attribute::NoUnwind);
+ if (DoesNotThrow) addFnAttr(Attribute::NoUnwind);
+ else removeFnAttr(Attribute::NoUnwind);
}
/// @brief Determine if the function returns a structure through first
@@ -226,6 +233,26 @@
return paramHasAttr(1, Attribute::StructRet);
}
+ /// @brief Determine if the parameter does not alias other parameters.
+ /// @param n The parameter to check. 1 is the first parameter, 0 is the return
+ bool doesNotAlias(unsigned n) const {
+ return paramHasAttr(n, Attribute::NoAlias);
+ }
+ void setDoesNotAlias(unsigned n, bool DoesNotAlias = true) {
+ if (DoesNotAlias) addAttribute(n, Attribute::NoAlias);
+ else removeAttribute(n, Attribute::NoAlias);
+ }
+
+ /// @brief Determine if the parameter can be captured.
+ /// @param n The parameter to check. 1 is the first parameter, 0 is the return
+ bool doesNotCapture(unsigned n) const {
+ return paramHasAttr(n, Attribute::NoCapture);
+ }
+ void setDoesNotCapture(unsigned n, bool DoesNotCapture = true) {
+ if (DoesNotCapture) addAttribute(n, Attribute::NoCapture);
+ else removeAttribute(n, Attribute::NoCapture);
+ }
+
/// copyAttributesFrom - copy all additional attributes (those not needed to
/// create a Function) from the Function Src to this one.
void copyAttributesFrom(const GlobalValue *Src);
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