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stage1: Fix handling of C ABI parameters split in multiple regs

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Take into account the increased number of parameters when flattening a
structure into one or more SSE registers.

Fixes #9061
This commit is contained in:
LemonBoy
2021-06-10 11:46:27 +02:00
committed by Andrew Kelley
parent 2a7fdd56c6
commit 43a09f7efc
3 changed files with 12 additions and 2 deletions
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4
src/stage1/codegen.cpp
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@@ -2161,11 +2161,11 @@ static bool iter_function_params_c_abi(CodeGen *g, ZigType *fn_type, FnWalk *fn_
// Register 2: (ptr + 1).*
// One floating point register per f64 or 2 f32's
size_t number_of_fp_regs = (size_t)ceilf((float)ty_size / (float)8);
size_t number_of_fp_regs = (ty_size + 7) / 8;
switch (fn_walk->id) {
case FnWalkIdAttrs: {
fn_walk->data.attrs.gen_i += 1;
fn_walk->data.attrs.gen_i += number_of_fp_regs;
break;
}
case FnWalkIdCall: {