Bug 1610048 - VSX f64->i32 loses bits in f32 intermediate
Summary: VSX f64->i32 loses bits in f32 intermediate
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: DevTools
Classification: Red Hat
Component: llvm
Version: llvm-toolset-7
Hardware: ppc64le
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 2018.4
Assignee: Tom Stellard
QA Contact: Miloš Prchlík
URL:
Whiteboard:
Depends On:
Blocks: 1562196
TreeView+ depends on / blocked
 
Reported: 2018-07-30 23:08 UTC by Josh Stone
Modified: 2018-11-13 15:20 UTC (History)
4 users (show)

Fixed In Version: llvm-toolset-6.0-llvm-6.0.1-3.el7
Doc Type: No Doc Update
Doc Text:
undefined
Clone Of:
Environment:
Last Closed: 2018-11-13 15:19:35 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
LLVM 38342 0 None None None 2018-07-30 23:09:49 UTC
Red Hat Product Errata RHBA-2018:3583 0 None None None 2018-11-13 15:20:15 UTC

Description Josh Stone 2018-07-30 23:08:52 UTC 
In Rust bug 1562196, we found that LLVM codegen is using an f32 intermediate value for fptosi f64 to i32 when PowerPC VSX is enabled.

Filed upstream: https://bugs.llvm.org/show_bug.cgi?id=38342
Comment 1 Tom Stellard 2018-08-07 04:44:06 UTC 
Fixed in llvm-toolset-6.0-llvm-6.0.1-3.el7.
Comment 3 Miloš Prchlík 2018-11-08 14:14:44 UTC 
Verified with llvm-toolset-6.0-llvm-6.0.1-5.el7.
Comment 5 errata-xmlrpc 2018-11-13 15:19:35 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3583
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