| commit | 7f7c9f1dad9364c97eb43ac649c5fffd6d4f7dbd | [log] [tgz] |
|---|---|---|
| author | Pete Cooper <peter_cooper@apple.com> | Fri May 08 18:29:42 2015 +0000 |
| committer | Pete Cooper <peter_cooper@apple.com> | Fri May 08 18:29:42 2015 +0000 |
| tree | 6704e7ed5221aa546d2906364ee237724b0adaf2 | |
| parent | 396441c8734d083ff70bdd866f3305f38fef35a9 [diff] |
[X86] Fast-ISel was incorrectly always killing the source of a truncate. A trunc from i32 to i1 on x86_64 generates an instruction such as %vreg19<def> = COPY %vreg9:sub_8bit<kill>; GR8:%vreg19 GR32:%vreg9 However, the copy here should only have the kill flag on the 32-bit path, not the 64-bit one. Otherwise, we are killing the source of the truncate which could be used later in the program. llvm-svn: 236890