llvm-project

Commit Graph

Author	SHA1	Message	Date
Quentin Colombet	fb9b0cdcfe	[RegAllocGreedy] Record missed hint for late recoloring. In https://reviews.llvm.org/D25347, Geoff noticed that we still have useless copy that we can eliminate after register allocation. At the time the allocation is chosen for those copies, they are not useless but, because of changes in the surrounding code, later on they might become useless. The Greedy allocator already has a mechanism to deal with such cases with a late recoloring. However, we missed to record the some of the missed hints. This commit fixes that. llvm-svn: 287070	2016-11-16 01:07:12 +00:00
Pawel Bylica	c3f6c97f71	Integer legalization: fix MUL expansion Summary: This fixes the runtime results produces by the fallback multiplication expansion introduced in r270720. For tests I created a fuzz tester that compares the results with Boost.Multiprecision. Reviewers: hfinkel Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D26628 llvm-svn: 286998	2016-11-15 18:29:24 +00:00
Pawel Bylica	c397f0b272	[CodeGen] Fix invalid shift in mul expansion Summary: When expanding mul in type legalization make sure the type for shift amount can actually fit the value. This fixes PR30354 https://llvm.org/bugs/show_bug.cgi?id=30354. Reviewers: hfinkel, majnemer, RKSimon Subscribers: RKSimon, llvm-commits Differential Revision: https://reviews.llvm.org/D24478 llvm-svn: 281403	2016-09-13 21:55:41 +00:00

Author

SHA1

Message

Date

Quentin Colombet

fb9b0cdcfe

[RegAllocGreedy] Record missed hint for late recoloring.

In https://reviews.llvm.org/D25347, Geoff noticed that we still have
useless copy that we can eliminate after register allocation. At the
time the allocation is chosen for those copies, they are not useless
but, because of changes in the surrounding code, later on they might
become useless.
The Greedy allocator already has a mechanism to deal with such cases
with a late recoloring. However, we missed to record the some of the
missed hints.

This commit fixes that.

llvm-svn: 287070

2016-11-16 01:07:12 +00:00

Pawel Bylica

c3f6c97f71

Integer legalization: fix MUL expansion

Summary:
This fixes the runtime results produces by the fallback multiplication expansion introduced in r270720.

For tests I created a fuzz tester that compares the results with Boost.Multiprecision.

Reviewers: hfinkel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D26628

llvm-svn: 286998

2016-11-15 18:29:24 +00:00

Pawel Bylica

c397f0b272

[CodeGen] Fix invalid shift in mul expansion

Summary: When expanding mul in type legalization make sure the type for shift amount can actually fit the value. This fixes PR30354 https://llvm.org/bugs/show_bug.cgi?id=30354.

Reviewers: hfinkel, majnemer, RKSimon

Subscribers: RKSimon, llvm-commits

Differential Revision: https://reviews.llvm.org/D24478

llvm-svn: 281403

2016-09-13 21:55:41 +00:00

3 Commits