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Issue when scalar expanding a boolean from a conditional to a bool vector #1954.

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This commit is contained in:
Christoffer Lerno
2025-02-13 21:36:28 +01:00
parent cec9b21707
commit e96dce92cd
3 changed files with 34 additions and 2 deletions
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1
releasenotes.md
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@@ -67,6 +67,7 @@
- Fix issue where compiling both for asm and object file would corrupt the obj file output.
- Fix `poll` and `POLL_FOREVER`.
- Missing end padding when including a packed struct #1966.
- Issue when scalar expanding a boolean from a conditional to a bool vector #1954.
### Stdlib changes
- Added '%h' and '%H' for printing out binary data in hexadecimal using the formatter.

4
src/compiler/llvm_codegen_expr.c
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@@ -6863,13 +6863,13 @@ void llvm_emit_enum_from_ord(GenContext *c, BEValue *value, Expr *expr)
void llvm_emit_scalar_to_vector(GenContext *c, BEValue *value, Expr *expr)
{
llvm_emit_expr(c, value, expr->inner_expr);
llvm_value_rvalue(c, value);
LLVMValueRef val = llvm_load_value_store(c, value);
LLVMTypeRef type = llvm_get_type(c, expr->type);
unsigned elements = LLVMGetVectorSize(type);
LLVMValueRef res = LLVMGetUndef(type);
for (unsigned i = 0; i < elements; i++)
{
res = LLVMBuildInsertElement(c->builder, res, value->value, llvm_const_int(c, type_usz, i), "");
res = LLVMBuildInsertElement(c->builder, res, val, llvm_const_int(c, type_usz, i), "");
}
llvm_value_set(value, res, expr->type);
}

31
test/test_suite/vector/vector_from_i1.c3t Normal file
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@@ -0,0 +1,31 @@
// #target: macos-x64
module test;
import std;
// issue 1954
macro splat($Type, x)
{
return $Type {x,x,x,x};
}
fn void main()
{
int[<4>] v1 = splat(int[<4>], 2);
int[<4>] v2 = splat(int[<4>], 1);
bool[<4>] vb = (v1 == v2);
}
/* #expect: test.ll
store <4 x i32> <i32 2, i32 2, i32 2, i32 2>, ptr %v1, align 16
store <4 x i32> <i32 1, i32 1, i32 1, i32 1>, ptr %v2, align 16
%0 = load <4 x i32>, ptr %v1, align 16
%1 = load <4 x i32>, ptr %v2, align 16
%eq = icmp eq <4 x i32> %0, %1
%2 = call i1 @llvm.vector.reduce.and.v4i1(<4 x i1> %eq)
%3 = zext i1 %2 to i8
%4 = insertelement <4 x i8> undef, i8 %3, i64 0
%5 = insertelement <4 x i8> %4, i8 %3, i64 1
%6 = insertelement <4 x i8> %5, i8 %3, i64 2
%7 = insertelement <4 x i8> %6, i8 %3, i64 3
store <4 x i8> %7, ptr %vb, align 4