[PATCH] D42216: Use New Module Metadata String "AvoidPLT" to avoid calls via PLT

[Rafael Avila de Espindola via llvm-commits]

Sriraman Tallam via Phabricator <reviews at reviews.llvm.org> writes:

> ===================================================================
> --- test/CodeGen/X86/no-plt.ll
> +++ test/CodeGen/X86/no-plt.ll
> @@ -3,28 +3,41 @@
>  ; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux-gnu \
>  ; RUN:   | FileCheck -check-prefix=X64 %s
>  
> -define i32 @main() #0 {
> -; X64: callq *_Z3foov at GOTPCREL(%rip)
> -; X64: callq _Z3barv
> -; X64: callq _Z3bazv
> +; Function Attrs: noinline nounwind uwtable
> +define void @memset_call(i8* nocapture %a, i8 %c, i32 %n) local_unnamed_addr #0 {
> +; X64: callq *memset at GOTPCREL(%rip)
> +entry:
> +  call void @llvm.memset.p0i8.i32(i8* %a, i8 %c, i32 %n, i1 false)
> +  ret void
> +}
> +
> +; Function Attrs: noinline nounwind uwtable
> +define void @memcpy_call(i8* nocapture %a, i8* nocapture readonly %b, i64 %n) local_unnamed_addr #0 {
> +; X64: callq *memcpy at GOTPCREL(%rip)
> +entry:
> +  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 %n, i32 1, i1 false)
> +  ret void
> +}
> +
> +define i32 @main() #1 {
> +; X64: callq *foo at GOTPCREL(%rip)
> +; X64: callq bar
> +; X64: callq baz
>  
>  entry:
>    %retval = alloca i32, align 4
>    store i32 0, i32* %retval, align 4
> -  %call1 = call i32 @_Z3foov()
> -  %call2 = call i32 @_Z3barv()
> -  %call3 = call i32 @_Z3bazv()
> +  %call1 = call i32 @foo()
> +  %call2 = call i32 @bar()
> +  %call3 = call i32 @baz()
>    ret i32 0

Looks like you based the patch on an old revision. Please upload a patch
based on r323680 or newer.

Cheers,
Rafael