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| author | Jim Grosbach <grosbach@apple.com> | 2012-09-21 00:18:30 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2012-09-21 00:18:30 +0000 |
| commit | 11b6fe5e9c3d853a4233ce4323021199092bb3c6 (patch) | |
| tree | 01f6575f81ec0337c8fe9d0dd171c15d9ba83156 /clang/lib/CodeGen/CGBuiltin.cpp | |
| parent | d3608f433adf2fbdbc739d0573f84bd77df6d99f (diff) | |
| download | bcm5719-llvm-11b6fe5e9c3d853a4233ce4323021199092bb3c6.tar.gz bcm5719-llvm-11b6fe5e9c3d853a4233ce4323021199092bb3c6.zip | |
ARM: Use a dedicated intrinsic for vector bitwise select.
The expression based expansion too often results in IR level optimizations
splitting the intermediate values into separate basic blocks, preventing
the formation of the VBSL instruction as the code author intended. In
particular, LICM would often hoist part of the computation out of a loop.
rdar://11011471
llvm-svn: 164342
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index 4ba52aa405a..b5b6c145f8b 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -1707,6 +1707,10 @@ Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID, unsigned Int; switch (BuiltinID) { default: return 0; + case ARM::BI__builtin_neon_vbsl_v: + case ARM::BI__builtin_neon_vbslq_v: + return EmitNeonCall(CGM.getIntrinsic(Intrinsic::arm_neon_vbsl, Ty), + Ops, "vbsl"); case ARM::BI__builtin_neon_vabd_v: case ARM::BI__builtin_neon_vabdq_v: Int = usgn ? Intrinsic::arm_neon_vabdu : Intrinsic::arm_neon_vabds; |
