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view tests/mini/intrinsics.d @ 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 | 146d8dfa0043 |
children |
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import ldc.intrinsics; extern(C) int printf(char*,...); extern(C) int scanf(char*,...); void main() { float f; printf("Enter float: "); //scanf("%f", &f); f = 1.22345; float sf = llvm_sqrt(f); printf("sqrt(%f) = %f\n", f, sf); double d; printf("Enter double: "); //scanf("%lf", &d); d = 2.2311167895435245; double sd = llvm_sqrt(d); printf("sqrt(%lf) = %lf\n", d, sd); real r; printf("Enter real: "); //scanf("%llf", &r); r = 3.2311167891231231234754764576; real sr = llvm_sqrt(r); printf("sqrt(%Lf) = %Lf\n", r, sr); }