LLVM bitcode file doesn't contain a valid module.

[dio4ev]

Suppose the following simple C file

#include <stdlib.h>

int main (void) {
return EXIT_SUCCESS;
}

and its LLVM IR representation (created with LLVM 3.5 and clang -emit-llvm -S hello.c -o hello.c.bc)

; ModuleID = 'hello.c'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nounwind uwtable
define i32 @main() #0 {
%1 = alloca i32, align 4
store i32 0, i32* %1
ret i32 0
}

attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }

!llvm.ident = !{!0}

!0 = metadata !{metadata !"clang version 3.5.2 (tags/RELEASE_352/final)"}

If I call llvm2kittel on the LLVM file then I get the following error message LLVM bitcode file doesn't contain a valid module..
What is missing here? Do I need an additional flag for clang?

Thank you!

[s-falke]

As far as I remember llvm2kittel only accepts binary bitcode as input, not the textual representation of bitcode. Please try using -c instead of -S when calling clang.

[dio4ev]

Thank you for your answer!

I tried using -c instead of -S:

clang -emit-llvm -c easy.c -o easy.c.bc

But I still get the same error when calling llvm2kittel on easy.c.bc.