x86 sse4.2 popCnt16# needs to zero-extend its result
make TEST=cgrun071 EXTRA_HC_OPTS=-msse42 fails for me in all the non-ghci non-llvm ways.
For popCnt16# we emit popcnt %ax,%ax which doesn't clear the high 48 bits of the result.
Patch incoming.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.9 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler (NCG) |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | simonmar, tibbe |
| Operating system | |
| Architecture |