search for: _zst3cosf

Displaying 4 results from an estimated 4 matches for "_zst3cosf".

2010 Mar 03
5
[LLVMdev] folding x * 0 = 0
.../Analysis/ConstantFolding.cpp. > Thanks for the hint and it works! Now I have a new Problem: I have this function: float foo(float a, float b) { float x = a * b * 0.0f; return cos(0.5) * sin(0.5) * x; }; after compiling it with clang (cpp mode) and renaming _ZSt3sinf to sin and _ZSt3cosf to cos I get the following: define float @_Z3fooff(float %a, float %b) nounwind { entry: %mul = fmul float %a, %b ; <float> [#uses=1] %mul2 = fmul float %mul, 0.000000e+000 ; <float> [#uses=1] %mul6 = fmul float 0x3FDAED54A0000000, %mul2 ; &l...
2010 Mar 01
2
[LLVMdev] constant folding for standard math functions
Hi! I'd like to replace all calls to standard math functions (e.g. sin(0.5)) by their result. What strategy do you recommend? Should I write a pass that does only this or should I copy and modify the SCCP pass? A problem with an extra pass could be that that I need to alternate my pass and SCCP several times since the results of the math functions could be folded again. -Jochen
2010 Mar 01
0
[LLVMdev] constant folding for standard math functions
On Mar 1, 2010, at 9:44 AM, Jochen Wilhelmy wrote: > Hi! > > I'd like to replace all calls to standard math functions (e.g. sin(0.5)) by > their result. > What strategy do you recommend? > Should I write a pass that does only this or should I copy and > modify the SCCP pass? > > A problem with an extra pass could be that that I need to alternate > my pass and
2010 Mar 05
0
[LLVMdev] folding x * 0 = 0
...t and it works! > Now I have a new Problem: > > I have this function: > > float foo(float a, float b) > { > float x = a * b * 0.0f; > return cos(0.5) * sin(0.5) * x; > }; > > after compiling it with clang (cpp mode) and renaming _ZSt3sinf to sin > and _ZSt3cosf to cos I get the following: > > define float @_Z3fooff(float %a, float %b) nounwind { > entry: > %mul = fmul float %a, %b ;<float> [#uses=1] > %mul2 = fmul float %mul, 0.000000e+000 ;<float> [#uses=1] > %mul6 = fmul float 0...