search for: _z3fooff

...2 %a, i32 %b ; <i32> [#uses=0] ret void } I get this error: entry (0x8503b90, LLVM BB @0x8501b00, ID#0): %reg1024 = ORI %R0, 0 %reg1025 = ORI %R1, 0 RETL Machine Function ********** REWRITING TWO-ADDR INSTRS ********** ********** Function: _Z3fooff ********** COMPUTING LIVE INTERVALS ********** ********** Function: _Z3fooii entry: livein register: R0 killed +[0,2:0) livein register: V4R0 killed +[0,2:0) livein register: R1 killed +[0,6:0) livein register: V4R0 killed +[0,2...

...he 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 ; <float> [#uses=1] ret float %mul6 } the sin...

...gt; ret void > } > > I get this error: > > entry (0x8503b90, LLVM BB @0x8501b00, ID#0): > %reg1024 = ORI %R0, 0 > %reg1025 = ORI %R1, 0 > RETL > Machine Function > ********** REWRITING TWO-ADDR INSTRS ********** > ********** Function: _Z3fooff > > ********** COMPUTING LIVE INTERVALS ********** > ********** Function: _Z3fooii > entry: > livein register: R0 killed +[0,2:0) > livein register: V4R0 killed +[0,2:0) <=== this > is bad > livein register: R1 killed +[...

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

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

...e 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 ;<float> [#uses=1] >...

...t;Rtest0", [I0, I1]>, DwarfRegNum<0>; Then attempt to build the attached llvm file using 'llvm-as < vecinterval.ll | llc -debug -march=sparc vecinterval -f -o vecinterval.s' I get the following error: ********** COMPUTING LIVE INTERVALS ********** ********** Function: _Z3fooff entry: livein register: I0 killed +[0,2:0) livein register: Rtest0 killed +[0,2:0) livein register: I1 killed +[0,6:0) livein register: Rtest0 killed +[0,2:1) lib/CodeGen/LiveInterval.cpp:189: failed assertion `B->end <= Star...

...;> I get this error: >> >> entry (0x8503b90, LLVM BB @0x8501b00, ID#0): >> %reg1024 = ORI %R0, 0 >> %reg1025 = ORI %R1, 0 >> RETL >> Machine Function >> ********** REWRITING TWO-ADDR INSTRS ********** >> ********** Function: _Z3fooff >> >> ********** COMPUTING LIVE INTERVALS ********** >> ********** Function: _Z3fooii >> entry: >> livein register: R0 killed +[0,2:0) >> livein register: V4R0 killed +[0,2:0) <=== this >> is bad >>...