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| author | Chad Rosier <mcrosier@codeaurora.org> | 2016-08-26 14:01:55 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@codeaurora.org> | 2016-08-26 14:01:55 +0000 |
| commit | 39c1dbb8452e9948a800ee4f67c79d6e49e6ae9e (patch) | |
| tree | 1cd840f84886efb7f614f194b6869bf73d8aa3d2 /llvm/lib | |
| parent | 44aeef7ecff263f5b96290e9cd1186b25ac36d16 (diff) | |
| download | bcm5719-llvm-39c1dbb8452e9948a800ee4f67c79d6e49e6ae9e.tar.gz bcm5719-llvm-39c1dbb8452e9948a800ee4f67c79d6e49e6ae9e.zip | |
[AArch64] Avoid materializing constant 1 by using csinc, rather than csel.
This is similar to what was done in r261675, but for CSINC rather than CSINV.
Differential Revision: https://reviews.llvm.org/D23892
llvm-svn: 279822
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.td | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td index ad6c628ab93..9c77b58e273 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td @@ -1133,6 +1133,14 @@ def : Pat<(AArch64csel (i32 0), (i32 1), (i32 imm:$cc), NZCV), (CSINCWr WZR, WZR, (i32 imm:$cc))>; def : Pat<(AArch64csel (i64 0), (i64 1), (i32 imm:$cc), NZCV), (CSINCXr XZR, XZR, (i32 imm:$cc))>; +def : Pat<(AArch64csel GPR32:$tval, (i32 1), (i32 imm:$cc), NZCV), + (CSINCWr GPR32:$tval, WZR, (i32 imm:$cc))>; +def : Pat<(AArch64csel GPR64:$tval, (i64 1), (i32 imm:$cc), NZCV), + (CSINCXr GPR64:$tval, XZR, (i32 imm:$cc))>; +def : Pat<(AArch64csel (i32 1), GPR32:$fval, (i32 imm:$cc), NZCV), + (CSINCWr GPR32:$fval, WZR, (i32 (inv_cond_XFORM imm:$cc)))>; +def : Pat<(AArch64csel (i64 1), GPR64:$fval, (i32 imm:$cc), NZCV), + (CSINCXr GPR64:$fval, XZR, (i32 (inv_cond_XFORM imm:$cc)))>; def : Pat<(AArch64csel (i32 0), (i32 -1), (i32 imm:$cc), NZCV), (CSINVWr WZR, WZR, (i32 imm:$cc))>; def : Pat<(AArch64csel (i64 0), (i64 -1), (i32 imm:$cc), NZCV), |
