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Never use C version of clz builtins

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This commit is contained in:
Andrey Turkin 2024-07-16 14:03:43 +03:00 • committed by Amanieu d'Antras
parent a5c7a17d55
commit cc64c7978e
2 changed files with 0 additions and 11 deletions
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9
library/compiler-builtins/build.rs
View file

@ -164,8 +164,6 @@ fn configure_check_cfg() {
"__bswapsi2",
"__bswapdi2",
"__bswapti2",
"__clzsi2",
"__clzdi2",
"__divdi3",
"__divsi3",
"__divmoddi4",
@ -346,8 +344,6 @@ mod c {
("__absvsi2", "absvsi2.c"),
("__addvdi3", "addvdi3.c"),
("__addvsi3", "addvsi3.c"),
("__clzdi2", "clzdi2.c"),
("__clzsi2", "clzsi2.c"),
("__cmpdi2", "cmpdi2.c"),
("__ctzdi2", "ctzdi2.c"),
("__ctzsi2", "ctzsi2.c"),
@ -435,8 +431,6 @@ mod c {
("__aeabi_frsub", "arm/aeabi_frsub.c"),
("__bswapdi2", "arm/bswapdi2.S"),
("__bswapsi2", "arm/bswapsi2.S"),
("__clzdi2", "arm/clzdi2.S"),
("__clzsi2", "arm/clzsi2.S"),
("__divmodsi4", "arm/divmodsi4.S"),
("__divsi3", "arm/divsi3.S"),
("__modsi3", "arm/modsi3.S"),
@ -572,9 +566,6 @@ mod c {
}
}
sources.remove(&to_remove);
// But use some generic implementations where possible
sources.extend(&[("__clzdi2", "clzdi2.c"), ("__clzsi2", "clzsi2.c")])
}
if llvm_target[0] == "thumbv7m" || llvm_target[0] == "thumbv7em" {

2
library/compiler-builtins/src/int/leading_zeros.rs
View file

@ -135,7 +135,6 @@ pub(crate) fn leading_zeros_riscv<T: Int + CastInto<usize>>(x: T) -> usize {
}
intrinsics! {
#[maybe_use_optimized_c_shim]
/// Returns the number of leading binary zeros in `x`
pub extern "C" fn __clzsi2(x: u32) -> usize {
if cfg!(any(target_arch = "riscv32", target_arch = "riscv64")) {
@ -145,7 +144,6 @@ intrinsics! {
}
}
#[maybe_use_optimized_c_shim]
/// Returns the number of leading binary zeros in `x`
pub extern "C" fn __clzdi2(x: u64) -> usize {
if cfg!(any(target_arch = "riscv32", target_arch = "riscv64")) {