Mercurial > projects > ldc
annotate gen/passes/Passes.h @ 1275:bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
It uses the machinery of the standard -simplify-libcalls pass, but optimizes
calls to the D runtime instead of calls to C libraries.
At the moment, these optimizations are implemented by this pass:
- Avoid the runtime call for `arr.length = newlen` if it can determine that
the new length isn't longer than the old one.
- Ditto for `cast(T[]) arr` if it will clearly always succeed.
(e.g. if the length of the original array is zero, or if the old element
size is a multiple of the new element size)
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Tue, 28 Apr 2009 21:58:06 +0200 |
parents | |
children | 91d9386d4a5a |
rev | line source |
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1275
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
1 #ifndef LDC_PASSES_H |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
2 #define LDC_PASSES_H |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
3 |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
4 namespace llvm { |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
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5 class FunctionPass; |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
6 } |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
7 |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
8 // Performs simplifications on runtime calls. |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
9 llvm::FunctionPass* createSimplifyDRuntimeCalls(); |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
10 |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
11 |
bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
Frits van Bommel <fvbommel wxs.nl>
parents:
diff
changeset
|
12 #endif |