Inline some java.lang.Math functions.

For a first pass, I inlined the various flavors of abs(), min()/max() on
integers, sqrt(), cos(), and sin().  These were selected based on a
static analysis of a few of our jar files.

A test of repeated sin/cos/sqrt calls on a G1-class device showed an
improvement of 28%.  This would improve more on devices with VFP
support if the VM is compiled with -mfpu=vfp.

Also: clarified a warning and removed some "#if 0" stuff.

1 files changed, 0 insertions, 22 deletions

diff --git a/vm/Misc.h b/vm/Misc.h
index 9b506276b..1566161c3 100644
--- a/vm/Misc.h
+++ b/vm/Misc.h
@@ -52,28 +52,6 @@ INLINE u4 dvmFloatToU4(float val) {
     conv.in = val;
     return conv.out;
 }
-#if 0
-INLINE float dvmU8ToFloat(u8 val) {
-    union { u8 in; float out; } conv;
-    conv.in = val;
-    return conv.out;
-}
-INLINE u8 dvmFloatToU8(float val) {
-    union { float in; u8 out; } conv;
-    conv.in = val;
-    return conv.out;
-}
-INLINE double dvmU8ToDouble(u8 val) {
-    union { u8 in; double out; } conv;
-    conv.in = val;
-    return conv.out;
-}
-INLINE u8 dvmDoubleToU8(double val) {
-    union { double in; u8 out; } conv;
-    conv.in = val;
-    return conv.out;
-}
-#endif
 
 /*
  * Print a hex dump to the log file.