search for: va_start

...-105,11 +105,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); /* Sanity check arguments */ if (args->reserved0 || args->reserved1) @@ -118,8 +118,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, return -EINVAL; if (args->v...

Hi, Op 3-okt-06, om 20:48 heeft Chris Lattner het volgende geschreven: > You'd have to change it to something like: > > void foo(int X, ...) { > P = va_start(); > bar(X, P); > } > > void bar(int X, valist P) { > use(P); > } Can the other va_...-intrinsics be used in bar as were the "P = va_start" in bar? The va_start probably is unnecessary now in bar, but where dus the va_end need to be: at the end of foo or of ba...

...Lattner wrote: > All the non-vastart calls can be anywhere. va_end in particular codegens > to a noop on all targets llvm currently supports, fwiw. > Things go well, except for the following (pathological?) C program: int va_double_sum(int count,...){ int i,sum=0; va_list ap; va_start(ap,count); for(i=0;i<count;i++){ sum+=va_arg(ap,int); } va_end(ap); va_start(ap,count);/* same vararg opened twice!!! */ for(i=0;i<count;i++){ sum+=va_arg(ap,int); } va_end(ap); return sum; } The problematic issue here is that the va_list is opened and used twice,...

...-105,11 +105,14 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); + /* If no end address is given, assume a single page. */ + if (args->va_end == 0) + args->va_end = args->va_start + PAGE_SIZE; /* Sanity check arguments */ if (args->rese...

Hi, I am using llc (llvm 2.9) to generate the MIPS assembly, but failed when compile any codes with va_start()/va_end()/va_arg(). Here is the minimal step to reproduce the failure: llvm-gcc-4.2 -emit-llvm hello.c -c -o hello.bc llc -march=mips hello.bc -o hello.s llc show this erroe message: LLVM ERROR: Cannot select: 0xa1873a0: ch = vaend 0xa187290:1, 0xa185ae0, 0xa187318 [ID=38] 0xa185ae0: i32 = Fra...

Hi, Op 2-okt-06, om 21:35 heeft Chris Lattner het volgende geschreven: > I think the easiest way to do this is to do the 'complement' as you > describe, but specially handle the varargs case. Basically you > need to > call va_start in the original function, and pass the valist pointer > down. > This shouldn't be too hard. OK. I've been rethinking my use of lib/Transforms/Utils/ CodeExtractor::ExtractCodeRegion(...) to obtain my first goal, but I don't think I need such a complex algorithm after all. B...

Hi, When I try to use va_start(ptr), I got the following problem : Type *Tys = PointerType::get(IntegerType::get(8), 0); return Intrinsic::getDeclaration(llvm_module,Intrinsic::vastart,&Tys,1); ............... The Name generated is "llvm.va_start.p0i8", so, it's not found, abending the process. and Len = 1...

Hi, When I try to use va_start(ptr), I got the following problem : Type *Tys = Type::VoidTy; Or Type *Tys = PointerType::get(IntegerType::get(8), 0); return Intrinsic::getDeclaration(llvm_module,Intrinsic::vastart,&Tys,1); ............... The Name generated is "llvm.va_start.p0i8", so, it's not found, abe...

...-105,11 +105,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); /* Sanity check arguments */ if (args->reserved0 || args->reserved1) @@ -118,8 +118,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, return -EINVAL; if (args->v...

...-116,11 +116,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); /* Sanity check arguments */ if (args->reserved0 || args->reserved1) @@ -129,8 +129,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, return -EINVAL; if (args->v...

...-112,11 +112,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); /* Sanity check arguments */ if (args->reserved0 || args->reserved1) @@ -125,8 +125,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, return -EINVAL; if (args->v...

...011 at 2:18 AM, Leo Chen. <leo.q.chen at gmail.com> wrote: > Hi, > > I am using llc (llvm 2.9) to generate the MIPS assembly I would suggest trying trunk; there have been a lot of improvements recently to the MIPS backend. -Eli > but failed > when compile any codes > with va_start()/va_end()/va_arg(). > > Here is the minimal step to reproduce the failure: > llvm-gcc-4.2 -emit-llvm hello.c -c -o hello.bc > llc -march=mips hello.bc -o hello.s > > llc show this erroe message: > LLVM ERROR: Cannot select: 0xa1873a0: ch = vaend 0xa187290:1, > 0xa185ae0, 0x...

...-105,11 +105,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_nouveau_svm_bind *args = data; unsigned target, cmd, priority; - unsigned long addr, end, size; + unsigned long addr, end; struct mm_struct *mm; args->va_start &= PAGE_MASK; - args->va_end &= PAGE_MASK; + args->va_end = ALIGN(args->va_end, PAGE_SIZE); /* Sanity check arguments */ if (args->reserved0 || args->reserved1) @@ -118,8 +118,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data, return -EINVAL; if (args->v...

...PS targeted llvm-gcc build. It's unclear from your usage example how llvm-gcc was configured. You can't reliably use an x86 llvm-gcc to generate bitcode and pass that to llc targeting a difference arch. -Jim > -Eli > >> but failed >> when compile any codes >> with va_start()/va_end()/va_arg(). >> >> Here is the minimal step to reproduce the failure: >> llvm-gcc-4.2 -emit-llvm hello.c -c -o hello.bc >> llc -march=mips hello.bc -o hello.s >> >> llc show this erroe message: >> LLVM ERROR: Cannot select: 0xa1873a0: ch = vaend 0...

On Mon, 2 Oct 2006, Bram Adams wrote: > So, I wonder what problems may show up in this algorithm (steps 4, 5 > and 6 seem to be crucial). The vararg-case could be a problem in step > 5, although the va_start intrinsic isn't tied to the surrounding > Function at first sight. There is an implicit dependency between vastart and the function it lives in. Specifically, if you have: void foo(int X, ...) { P = va_start(); use(P); } You can't change this to: void foo(int X, ...) { bar...

On Tue, 3 Oct 2006, Bram Adams wrote: >> You'd have to change it to something like: >> void foo(int X, ...) { >> P = va_start(); >> bar(X, P); >> } >> >> void bar(int X, valist P) { >> use(P); >> } > > Can the other va_...-intrinsics be used in bar as were the "P = > va_start" in bar? The va_start probably is unnecessary now in bar, > but where dus the va_end...

...mple how llvm-gcc was configured. You can't reliably use an x86 llvm-gcc to generate bitcode and pass that to llc targeting a difference arch. >> >> -Jim >> >>> -Eli >>> >>>> but failed >>>> when compile any codes >>>> with va_start()/va_end()/va_arg(). >>>> >>>> Here is the minimal step to reproduce the failure: >>>> llvm-gcc-4.2 -emit-llvm hello.c -c -o hello.bc >>>> llc -march=mips hello.bc -o hello.s >>>> >>>> llc show this erroe message: >>>&...

...ll_Name: Kenji Rikitake Version: 2.3.1 OS: FreeBSD 4.11-RELEASE-p18 Submission from: (NULL) (220.157.163.221) After doing ./configure --disable-mbcs (as default in FreeBSD 4.x) and make the compilation stops at src/main/printutils.c as: printutils.c: In function `Rvprintf': printutils.c:582: `va_start' used in function with fixed args printutils.c:591: syntax error before `}' the following patch includes two fixes: 1) removing unnecessary va_start() and va_end() macro for Rvprintf() in src/main/printutils.c 2) fixing error by adding {} around calling error() in src/main/printutils.c...

...a Function (no clones!) into a new Function that has the exact same signature, and adding a call to the new Function in the old one. I tried out lib/ Transforms/Utils/CodeExtractor::ExtractCodeRegion(...), but this one unfortunately checks first to see whether there are any allocas and/ or va_starts and returns a null pointer in that case. Could this check be omitted? If not, is there another way to do the extraction? One of the obstacles I face when trying to do the complement (creating new Function and adding call to original in it), is to find out how to pass the varargs argument of...

...gRef (http://llvm.org/docs/LangRef.html#variable-argument-handling-intrinsics) lists an example that segfaults. Try the following on x86_64: -- 8< -- define i32 @test(i32 %X, ...) { ; Initialize variable argument processing %ap = alloca i8* %ap2 = bitcast i8** %ap to i8* call void @llvm.va_start(i8* %ap2) ; Read a single integer argument %tmp = va_arg i8** %ap, i32 ; Demonstrate usage of llvm.va_copy and llvm.va_end %aq = alloca i8* %aq2 = bitcast i8** %aq to i8* call void @llvm.va_copy(i8* %aq2, i8* %ap2) call void @llvm.va_end(i8* %aq2) ; Stop processing of arguments....