| commit | d585f04fd39f86edaa2aafd776e9ad037d075396 | [log] [tgz] |
|---|---|---|
| author | Ian Lance Taylor <iant@golang.org> | Sat Jan 26 11:55:00 2019 -0800 |
| committer | Ian Lance Taylor <iant@golang.org> | Sun Jan 27 01:43:05 2019 +0000 |
| tree | ce57e18c64d306c21bc9ef01c40c81caeda642ca | |
| parent | 4e056ade247bdab4a328776e4516a06fe7f26259 [diff] |
cmd/compile: base PPC64 trunc rules on final type, not op type Whether a truncation should become a MOVWreg or a MOVWZreg doesn't depend on the type of the operand, it depends on the type of the final result. If the final result is unsigned, we can use MOVWZreg. If the final result is signed, we can use MOVWreg. Checking the type of the operand does the wrong thing if truncating an unsigned value to a signed value, or vice-versa. Fixes #29943 Change-Id: Ia6fc7d006486fa02cffd0bec4d910bdd5b6365f8 Reviewed-on: https://go-review.googlesource.com/c/159760 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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