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| author | Andrew Kelley <andrew@ziglang.org> | 2024-05-01 17:14:24 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2024-05-08 19:37:29 -0700 |
| commit | 708894cf9903bab2e9b0dde0b609a6cc7cc55ffd (patch) | |
| tree | a161dbfb600fef3c647a038e4dcbd142e2389f76 /lib/std/Random | |
| parent | 6730b366a059a83d64f66644bf49d69cb31a6a08 (diff) | |
| download | zig-708894cf9903bab2e9b0dde0b609a6cc7cc55ffd.tar.gz zig-708894cf9903bab2e9b0dde0b609a6cc7cc55ffd.zip | |
add a debug subcommand for printing LLVM integer type alignment
Useful when debugging why upgrading from LLVM 17 to 18 caused C ABI
regressions. Turns out LLVM 18 does the following insane thing:
```diff
-[nix-shell:~/dev/zig/build-llvm17]$ stage4/bin/zig llvm-ints i386-linux-musl
+[nix-shell:~/src/zig/build-llvm18]$ stage4/bin/zig llvm-ints i386-linux-musl
LLVMABIAlignmentOfType(i1) == 1
LLVMABIAlignmentOfType(i8) == 1
LLVMABIAlignmentOfType(i16) == 2
LLVMABIAlignmentOfType(i32) == 4
LLVMABIAlignmentOfType(i64) == 4
-LLVMABIAlignmentOfType(i128) == 4
-LLVMABIAlignmentOfType(i256) == 4
+LLVMABIAlignmentOfType(i128) == 16
+LLVMABIAlignmentOfType(i256) == 16
```
Diffstat (limited to 'lib/std/Random')
0 files changed, 0 insertions, 0 deletions