subject:"GCN RDNA2\+ vs. GCC vectorizer \"Reduce using vector shifts\" \(was\: \[committed\] amdgcn\: add \-march=gfx1030 EXPERIMENTAL\)"

Re: GCN RDNA2+ vs. GCC vectorizer "Reduce using vector shifts" (was: [committed] amdgcn: add -march=gfx1030 EXPERIMENTAL)

2024-02-13 Thread Richard Biener

On Mon, 12 Feb 2024, Thomas Schwinge wrote: > Hi! > > On 2023-10-20T12:51:03+0100, Andrew Stubbs wrote: > > I've committed this patch > > ... as commit c7ec7bd1c6590cf4eed267feab490288e0b8d691 > "amdgcn: add -march=gfx1030 EXPERIMENTAL". > > The RDNA2 ISA variant doesn't support certain

GCN RDNA2+ vs. GCC vectorizer "Reduce using vector shifts" (was: [committed] amdgcn: add -march=gfx1030 EXPERIMENTAL)

2024-02-12 Thread Thomas Schwinge

Hi! On 2023-10-20T12:51:03+0100, Andrew Stubbs wrote: > I've committed this patch ... as commit c7ec7bd1c6590cf4eed267feab490288e0b8d691 "amdgcn: add -march=gfx1030 EXPERIMENTAL". The RDNA2 ISA variant doesn't support certain instructions previous implemented in GCC/GCN, so a number of