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mark internal functions linker private (#381)

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Prevents unused functions in the emitted ELF object. Drive-by add a
missing test case (which misses a relocation under `-Oz` when all
internal functions are marked as private).

---------

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
This commit is contained in:
xermicus
2025-09-29 17:55:29 +02:00
committed by GitHub
parent 1cc4f967b4
commit 6858cb9a61
14 changed files with 111 additions and 65 deletions
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crates/stdlib/stdlib.ll
+4 -9
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@@ -3,7 +3,7 @@
target datalayout = "e-m:e-p:32:64-p1:32:64-i64:64-i128:128-n32:64-S64"
target triple = "riscv64-unknown-none-elf"
define i256 @__addmod(i256 %arg1, i256 %arg2, i256 %modulo) #4 {
define i256 @__addmod(i256 %arg1, i256 %arg2, i256 %modulo) #0 {
entry:
%is_zero = icmp eq i256 %modulo, 0
br i1 %is_zero, label %return, label %addmod
@@ -28,7 +28,7 @@ return:
ret i256 %value
}
define i256 @__clz(i256 %v) #0 {
define private i256 @__clz(i256 %v) #0 {
entry:
%vs128 = lshr i256 %v, 128
%vs128nz = icmp ne i256 %vs128, 0
@@ -72,7 +72,7 @@ entry:
ret i256 %result
}
define i256 @__ulongrem(i256 %0, i256 %1, i256 %2) #0 {
define private i256 @__ulongrem(i256 %0, i256 %1, i256 %2) #0 {
%.not = icmp ult i256 %1, %2
br i1 %.not, label %4, label %51
@@ -239,7 +239,7 @@ exponent_loop_body:
br i1 %exp_val_is_less_2, label %return, label %exponent_loop_body
}
define i256 @__exp_pow2(i256 %val_log2, i256 %exp) #0 {
define private i256 @__exp_pow2(i256 %val_log2, i256 %exp) #0 {
entry:
%shift = mul nuw nsw i256 %val_log2, %exp
%is_overflow = icmp ugt i256 %shift, 255
@@ -250,8 +250,3 @@ entry:
attributes #0 = { mustprogress nofree norecurse nosync nounwind readnone willreturn }
attributes #1 = { argmemonly readonly nofree null_pointer_is_valid }
attributes #2 = { argmemonly mustprogress nofree norecurse nosync nounwind willreturn null_pointer_is_valid }
attributes #3 = { noinline noreturn }
attributes #4 = { alwaysinline mustprogress nofree norecurse nosync nounwind readnone willreturn }
attributes #5 = { noreturn nounwind }