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Add mem::store and mem::load which may combine both aligned and volatile operations.

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This commit is contained in:
Christoffer Lerno
2026-01-17 18:35:44 +01:00
parent 2a8fbb8fec
commit 945a3f3fc0
6 changed files with 91 additions and 14 deletions
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33
test/test_suite/builtins/unaligned_load_store.c3t
View File

@@ -6,6 +6,16 @@ struct Foo
float[4] a;
}
fn void test()
{
int b = 123;
int[100] g;
mem::store(&b, 342, $align: 2, $volatile: true);
int z = mem::load(&b, $align: 2, $volatile: true);
int[100] gg = mem::load(&g, $align: 4, $volatile: true);
mem::store(&g, gg, $align: 4, $volatile: true);
}
fn void main()
{
Foo* foo;
@@ -15,8 +25,8 @@ fn void main()
a = *(float[<4>]*)&foo.a;
*(float[<4>]*)&foo.a = a;
a = $$unaligned_load((float[<4>]*)&foo.a, 1);
$$unaligned_store((float[<4>]*)&foo.a, a, 1);
a = $$unaligned_load((float[<4>]*)&foo.a, 1, false);
$$unaligned_store((float[<4>]*)&foo.a, a, 1, false);
b = @unaligned_load(*(float[<4>]*)&foo.a, 1);
@unaligned_store(*(float[<4>]*)&foo.a, b, 1);
@@ -24,6 +34,25 @@ fn void main()
/* #expect: test.ll
define void @test.test() #0 {
entry:
%b = alloca i32, align 4
%g = alloca [100 x i32], align 16
%z = alloca i32, align 4
%gg = alloca [100 x i32], align 16
%value = alloca [100 x i32], align 16
store i32 123, ptr %b, align 4
call void @llvm.memset.p0.i64(ptr align 16 %g, i8 0, i64 400, i1 false)
store volatile i32 342, ptr %b, align 4
%0 = load volatile i32, ptr %b, align 2
store i32 %0, ptr %z, align 4
%1 = load volatile [100 x i32], ptr %g, align 4
store [100 x i32] %1, ptr %gg, align 16
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %value, ptr align 16 %gg, i32 400, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 4 %g, ptr align 16 %value, i32 400, i1 true)
ret void
}
define void @test.main() #0 {
entry:
%foo = alloca ptr, align 8

2
test/test_suite/builtins/unaligned_load_store_chain.c3t
View File

@@ -5,7 +5,7 @@ import std, libc;
fn void unaligned_load_store(void* dst, void* src) @nostrip
{
$$unaligned_store(dst, $$unaligned_load((char*)src, 2), 2);
$$unaligned_store(dst, $$unaligned_load((char*)src, 2), 2, false);
}
fn int main()