compiler_rt fails to compile for AVR

[mattnite]

Zig Version

0.14.0-dev.3296+a7467b9bb

Steps to Reproduce and Observed Behavior

Run zig build for this repo, which provides the bare minimum to reproduce. Here is the build output:

install
└─ install reproduce-avr-compiler-rt-error
   └─ zig build-exe reproduce-avr-compiler-rt-error Debug avr-freestanding-eabi 1 errors
error: sub-compilation of compiler_rt failed
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: expected type 'usize', found 'u31'
            @memset(result[0..exponent_limb], switch (endian) {
                              ^~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixhfei.zig:12:27: note: called from here
    return bigIntFromFloat(.signed, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: expected type 'usize', found 'u31'
            @memset(result[0..exponent_limb], switch (endian) {
                              ^~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixsfei.zig:12:27: note: called from here
    return bigIntFromFloat(.signed, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: expected type 'usize', found 'u31'
            @memset(result[0..exponent_limb], switch (endian) {
                              ^~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixdfei.zig:12:27: note: called from here
    return bigIntFromFloat(.signed, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: expected type 'usize', found 'u31'
            @memset(result[0..exponent_limb], switch (endian) {
                              ^~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixtfei.zig:12:27: note: called from here
    return bigIntFromFloat(.signed, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: expected type 'usize', found 'u31'
            @memset(result[0..exponent_limb], switch (endian) {
                              ^~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:88:31: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixxfei.zig:12:27: note: called from here
    return bigIntFromFloat(.signed, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: expected type 'usize', found 'u31'
    std.mem.writePackedIntNative(I, std.mem.sliceAsBytes(result), exponent, int);
                                                                  ^~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/std/mem.zig:1963:68: note: parameter type declared here
fn writePackedIntLittle(comptime T: type, bytes: []u8, bit_offset: usize, value: T) void {
                                                                   ^~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixunshfei.zig:12:27: note: called from here
    return bigIntFromFloat(.unsigned, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: expected type 'usize', found 'u31'
    std.mem.writePackedIntNative(I, std.mem.sliceAsBytes(result), exponent, int);
                                                                  ^~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/std/mem.zig:1963:68: note: parameter type declared here
fn writePackedIntLittle(comptime T: type, bytes: []u8, bit_offset: usize, value: T) void {
                                                                   ^~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixunssfei.zig:12:27: note: called from here
    return bigIntFromFloat(.unsigned, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: expected type 'usize', found 'u31'
    std.mem.writePackedIntNative(I, std.mem.sliceAsBytes(result), exponent, int);
                                                                  ^~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/std/mem.zig:1963:68: note: parameter type declared here
fn writePackedIntLittle(comptime T: type, bytes: []u8, bit_offset: usize, value: T) void {
                                                                   ^~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixunsdfei.zig:12:27: note: called from here
    return bigIntFromFloat(.unsigned, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: expected type 'usize', found 'u31'
    std.mem.writePackedIntNative(I, std.mem.sliceAsBytes(result), exponent, int);
                                                                  ^~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/std/mem.zig:1963:68: note: parameter type declared here
fn writePackedIntLittle(comptime T: type, bytes: []u8, bit_offset: usize, value: T) void {
                                                                   ^~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixunstfei.zig:12:27: note: called from here
    return bigIntFromFloat(.unsigned, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: expected type 'usize', found 'u31'
    std.mem.writePackedIntNative(I, std.mem.sliceAsBytes(result), exponent, int);
                                                                  ^~~~~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/int_from_float.zig:100:67: note: unsigned 16-bit int cannot represent all possible unsigned 31-bit values
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/std/mem.zig:1963:68: note: parameter type declared here
fn writePackedIntLittle(comptime T: type, bytes: []u8, bit_offset: usize, value: T) void {
                                                                   ^~~~~
    /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/compiler_rt/fixunsxfei.zig:12:27: note: called from here
    return bigIntFromFloat(.unsigned, r[0 .. divCeil(usize, bits, 32) catch unreachable], a);
           ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: the following command failed with 1 compilation errors:
/Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/zig build-exe -ODebug -target avr-freestanding-eabi -mcpu avr5 -Mroot=/Users/mattnite/code/reproduce-avr-compiler-rt-error/src/main.zig --cache-dir /Users/mattnite/code/reproduce-avr-compiler-rt-error/.zig-cache --global-cache-dir /Users/mattnite/.cache/zig --name reproduce-avr-compiler-rt-error --zig-lib-dir /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib/ --listen=-
Build Summary: 0/3 steps succeeded; 1 failed
install transitive failure
└─ install reproduce-avr-compiler-rt-error transitive failure
   └─ zig build-exe reproduce-avr-compiler-rt-error Debug avr-freestanding-eabi 1 errors
error: the following build command failed with exit code 1:
/Users/mattnite/code/reproduce-avr-compiler-rt-error/.zig-cache/o/95546235ad67c67b126c526a3eada073/build /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/zig /Users/mattnite/zig/0.14.0-dev.3287+65e7ede49/files/lib /Users/mattnite/code/reproduce-avr-compiler-rt-error /Users/mattnite/code/reproduce-avr-compiler-rt-error/.zig-cache /Users/mattnite/.cache/zig --seed 0xa73a1960 -Z1df4e6250195e691

Expected Behavior

The expected behaviour is for compiler_rt to successfully compile for AVR.