R600/SI: Add pattern for sign extension of i1 to i32.

16 more little piglits with radeonsi.

NOTE: This is a candidate for the Mesa stable branch.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175887 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed