diff options
| -rw-r--r-- | llvm/lib/Target/R600/SIInstructions.td | 11 | ||||
| -rw-r--r-- | llvm/test/CodeGen/R600/xor.ll | 26 |
2 files changed, 33 insertions, 4 deletions
diff --git a/llvm/lib/Target/R600/SIInstructions.td b/llvm/lib/Target/R600/SIInstructions.td index 26024dc4f2d..ba1fae2e577 100644 --- a/llvm/lib/Target/R600/SIInstructions.td +++ b/llvm/lib/Target/R600/SIInstructions.td @@ -1773,15 +1773,18 @@ def : RsqPat<V_RSQ_F64_e32, f64>; // VOP2 Patterns //===----------------------------------------------------------------------===// -def : Pat < - (or i64:$src0, i64:$src1), +class BinOp64Pat <SDNode node, Instruction inst> : Pat < + (node i64:$src0, i64:$src1), (INSERT_SUBREG (INSERT_SUBREG (i64 (IMPLICIT_DEF)), - (V_OR_B32_e32 (EXTRACT_SUBREG i64:$src0, sub0), + (inst (EXTRACT_SUBREG i64:$src0, sub0), (EXTRACT_SUBREG i64:$src1, sub0)), sub0), - (V_OR_B32_e32 (EXTRACT_SUBREG i64:$src0, sub1), + (inst (EXTRACT_SUBREG i64:$src0, sub1), (EXTRACT_SUBREG i64:$src1, sub1)), sub1) >; +def : BinOp64Pat <or, V_OR_B32_e32>; +def : BinOp64Pat <xor, V_XOR_B32_e32>; + class SextInReg <ValueType vt, int ShiftAmt> : Pat < (sext_inreg i32:$src0, vt), (V_ASHRREV_I32_e32 ShiftAmt, (V_LSHLREV_B32_e32 ShiftAmt, $src0)) diff --git a/llvm/test/CodeGen/R600/xor.ll b/llvm/test/CodeGen/R600/xor.ll index 00430417399..ab618cf40c3 100644 --- a/llvm/test/CodeGen/R600/xor.ll +++ b/llvm/test/CodeGen/R600/xor.ll @@ -130,3 +130,29 @@ define void @vector_not_i64(i64 addrspace(1)* %out, i64 addrspace(1)* %in0, i64 store i64 %result, i64 addrspace(1)* %out ret void } + +; Test that we have a pattern to match xor inside a branch. +; Note that in the future the backend may be smart enough to +; use an SALU instruction for this. + +; SI-CHECK-LABEL: @xor_cf +; SI-CHECK: V_XOR +; SI-CHECK: V_XOR +define void @xor_cf(i64 addrspace(1)* %out, i64 addrspace(1)* %in, i64 %a, i64 %b) { +entry: + %0 = icmp eq i64 %a, 0 + br i1 %0, label %if, label %else + +if: + %1 = xor i64 %a, %b + br label %endif + +else: + %2 = load i64 addrspace(1)* %in + br label %endif + +endif: + %3 = phi i64 [%1, %if], [%2, %else] + store i64 %3, i64 addrspace(1)* %out + ret void +} |
