similar to: What should IRObjectFile expose?

Hi the appended IR code does not optimize to my liking :) this is the interesting part in x86_64, that got produced via clang -Os: --- movq -16(%r12), %rax movl -4(%rax), %ecx andl $2298949, %ecx ## imm = 0x231445 cmpq $2298949, (%rax,%rcx) ## imm = 0x231445 leaq 8(%rax,%rcx), %rax cmovneq %r15, %rax movl $2298949, %esi ## imm = 0x231445 movq %r12, %rdi movq %r14,

On Wed, Apr 6, 2016 at 4:53 PM, Mehdi Amini <mehdi.amini at apple.com> wrote: > > On Apr 6, 2016, at 4:41 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > > Hi all, > > I'd like to propose changes to how we do promotion of global values in > ThinLTO. The goal here is to make it possible to pre-compile parts of the > translation unit to native code at

Hi, LLVM only support primitive type i32 and i64, no i48. The clang translate "C int type" to i32 too. My question is if a cpu is 48 bits register size, how to write the backend for 48 bits register architecture. Can someone help me with this problem? Jonathan -------------- next part -------------- An HTML attachment was scrubbed... URL:

> On Apr 6, 2016, at 9:40 PM, Teresa Johnson <tejohnson at google.com> wrote: > > > > On Wed, Apr 6, 2016 at 5:13 PM, Peter Collingbourne <peter at pcc.me.uk <mailto:peter at pcc.me.uk>> wrote: > > > On Wed, Apr 6, 2016 at 4:53 PM, Mehdi Amini <mehdi.amini at apple.com <mailto:mehdi.amini at apple.com>> wrote: > >> On Apr 6,

On Sep 5, 2013, at 3:37 AM, gamma_chen <gamma_chen at yahoo.com.tw> wrote: > LLVM only support primitive type i32 and i64, no i48. The clang translate "C int type" to i32 too. My question is if a cpu is 48 bits register size, how to write the backend for 48 bits register architecture. Can someone help me with this problem? I'm not LLVM expert, but I'm pretty sure your

Hello Has there been any progress on this topic ? The 3.9 optimizer output is still the same as I just looked. https://llvm.org/bugs/show_bug.cgi?id=24448 Ciao Nat! Sanjay Patel schrieb: > [cc'ing Zia] > > We have this transform with -Os for some cases after: > http://reviews.llvm.org/rL244601 > http://reviews.llvm.org/D11363 > > but something in this example is

I'm trying to use LLVM to create compiler-rt.o on Windows. I use this command from the compiler-rt project: [nix-shell:~/downloads/llvm-project/compiler-rt]$ clang -nostdlib -S -emit-llvm lib/builtins/udivti3.c -g -target x86_64-windows -DCRT_HAS_128BIT The resulting LLVM IR is: ================================================================= ; ModuleID = 'lib/builtins/udivti3.c'

Hi- Here is the simple C++ function: ----------- void foo() { } ----------- Let's say, above function is compiled to generate LLVM IR with -g flag using the command line `clang++ -g -O0 -S -emit-llvm foo.cpp`, we get below IR ----------- ; ModuleID = 'foo.cpp' source_filename = "foo.cpp" target datalayout =

Most probably you need to properly specify the calling convention the backend is using for calling the runtime functions. Or implement the stub for udivti3 that performs the necessary argument lifting. I guess there is no standard ABI document describing the intended calling convention here, so I'd just do what mingw64 does here and make everything here compatible. On Thu, Apr 26, 2018 at

Hi, I think this is a very simple question, and it must just be missing something. I am looking for find out how to assign a constant integer value to the variable in llvm ir. The following returns 12, and %var2 = 12. ; ModuleID = 't.c' target datalayout =

On Fri, Jun 2, 2017 at 12:39 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > On Fri, Jun 2, 2017 at 12:29 PM, Teresa Johnson <tejohnson at google.com> > wrote: > >> On Fri, Jun 2, 2017 at 12:18 PM, Peter Collingbourne via llvm-dev < >> llvm-dev at lists.llvm.org> wrote: >> >>> Why do we need a custom dumping format for the summary? Since

On Thu, Apr 26, 2018 at 3:44 AM, Anton Korobeynikov <anton at korobeynikov.info > wrote: > Most probably you need to properly specify the calling convention the > backend is using for calling the runtime functions. Thanks for the tip. Can you be more specific? Are you suggesting there is some config parameter I can set before running TargetMachineEmitToFile? Do you know what

Thanks Renato and Rafael. > On 24 June 2016 at 06:02, Daniel Sanders <Daniel.Sanders at imgtec.com> > wrote: > > Hi, > > > > Having recently enabled IAS by default for the MIPS O32 ABI, I'm now > trying to do the same thing for the MIPS N64 ABI. Unfortunately, it is not > currently possible to enable IAS by default for the N64 ABI without also > enabling

Hi David If you look at line https://github.com/llvm/llvm-project/blob/master/llvm/lib/IR/Verifier.cpp#L1160 there is IR verification which asserts that only in case of `spFlags = DISPFlagDefinition`, the compilation unit (`unit` field) should be present. Otherwise, it should *not* be present. In the crash case, `spFlags = DISPFlagOptimized`. So, I guess, `unit` field should *not* be present,

On Fri, Jun 2, 2017 at 12:18 PM, Peter Collingbourne via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Why do we need a custom dumping format for the summary? Since we already > need the YAML format anyway, wouldn't it be better to extend that to cover > the entire summary? > IMO it is useful/convenient to be able to see the summary in the llvm-dis output. Teresa >

This is my module's dump, which is different than yours. I wonder how I can get the external thing for my function. define double @sum(double, double) { entry: call void @FooBar() %tmp = fadd double %0, %1 ret double %tmp } ; ModuleID = 'My_Module' define double @sum(double, double) { entry: call void @FooBar() %tmp = fadd double %0, %1 ret double %tmp } declare void

On 23 May 2015 at 00:08, Jim Grosbach <grosbach at apple.com> wrote: > This is the key question. The LLVM assumption is that these sorts of things > are inferable from the triple. Your observation here that the GNU world’s > notion of triples and LLVM’s need not be the same is a good one. Having a > split and a translation up in clang seems an interesting avenue to explore. >

On Mar 15, 2013, at 3:08 PM, James Courtier-Dutton <james.dutton at gmail.com> wrote: > Hi, > > I think this is a very simple question, and it must just be missing something. > > I am looking for find out how to assign a constant integer value to > the variable in llvm ir. > > The following returns 12, and %var2 = 12. > ; ModuleID = 't.c' > target

I am bit confused - `unit` must be present for definitions, and `optimized ` is also a `definition`, so, `unit` must be present for `optimized ` too. Am I right? Mahesha On Sun, May 31, 2020 at 10:14 PM David Blaikie <dblaikie at gmail.com> wrote: > definition and optimized are orthogonal (a function could be both, or > neither) - one says this DISubprogram describes a function

James Courtier-Dutton <james.dutton at gmail.com> writes: > I think this is a very simple question, and it must just be missing something. > > I am looking for find out how to assign a constant integer value to > the variable in llvm ir. > > The following returns 12, and %var2 = 12. > ; ModuleID = 't.c' > target datalayout = >