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From: "hp at sourceware dot org" <sourceware-bugzilla@sourceware.org> To: gdb-prs@sourceware.org Subject: [Bug sim/11965] New: vmhaddshs, vmhraddshs uninitialized variable may cause wrong VSCR result Date: Wed, 01 Sep 2010 06:33:00 -0000 [thread overview] Message-ID: <20100901063340.11965.hp@sourceware.org> (raw) Looking at sim/ppc/altivec.igen 1.4 it seems the sat variable for vmhaddshs and vmhraddshs isn't initialized before being "|=" in the vector element loop, so depending on what the host and compiler makes of it, VSCR (from calling ALTIVEC_SET_SAT) may be set incorrectly. I guess not many codes looks at it, hence going undetected until now. Just a random observation, no test-case or anything. Not even sure I see right. :) -- Summary: vmhaddshs, vmhraddshs uninitialized variable may cause wrong VSCR result Product: gdb Version: HEAD Status: UNCONFIRMED Severity: normal Priority: P2 Component: sim AssignedTo: unassigned at sourceware dot org ReportedBy: hp at sourceware dot org CC: gdb-prs at sourceware dot org GCC target triplet: powerpc-* http://sourceware.org/bugzilla/show_bug.cgi?id=11965 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
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