Tianwei
2007-Sep-05 08:02 UTC
[LLVMdev] how to compile several files at ipa level using LLVM?
Hi,all: I download the 2.0 source and compile the llvm-gcc and llvm source code successfully. now try to compile the following two files using linking time optimization: a.c: #include <stdio.h> extern foo(int *x); int main() { int x = 5; foo(&x); printf("x = %d\n",x); } b.c: void foo(int *x) { *x = 8; } now after reading some tutorial and documents, I use the following steps to get the result: 1. llvm-gcc -O3 -emit-llvm a.c -c -o a.bc 2.llvm-gcc -O3 -emit-llvm b.c -c -o b.bc 3. llvm-link -o final.bc a.bc b.bc 4.lli final.bc x = 8 I want to know what's the standard process to compile programs at inter-procedural level? for example, how can I write the config file in SPEC CPU2000 if I want to compile them at "-O3 -ipo", is there any way as intel compiler did? or is there any document for this? thanks very much. tianwei -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20070905/c2b58caf/attachment.html>