Index: llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td =================================================================== --- llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td +++ llvm/trunk/lib/Target/Mips/Mips64InstrInfo.td @@ -486,6 +486,14 @@ def : MipsPat<(i32 (trunc GPR64:$src)), (SLL (EXTRACT_SUBREG GPR64:$src, sub_32), 0)>; +// Bypass trunc nodes for bitwise ops. +def : MipsPat<(i32 (trunc (and GPR64:$lhs, GPR64:$rhs))), + (EXTRACT_SUBREG (AND64 GPR64:$lhs, GPR64:$rhs), sub_32)>; +def : MipsPat<(i32 (trunc (or GPR64:$lhs, GPR64:$rhs))), + (EXTRACT_SUBREG (OR64 GPR64:$lhs, GPR64:$rhs), sub_32)>; +def : MipsPat<(i32 (trunc (xor GPR64:$lhs, GPR64:$rhs))), + (EXTRACT_SUBREG (XOR64 GPR64:$lhs, GPR64:$rhs), sub_32)>; + // 32-to-64-bit extension def : MipsPat<(i64 (anyext GPR32:$src)), (SLL64_32 GPR32:$src)>; def : MipsPat<(i64 (zext GPR32:$src)), (DSRL (DSLL64_32 GPR32:$src), 32)>; Index: llvm/trunk/test/CodeGen/Mips/llvm-ir/and.ll =================================================================== --- llvm/trunk/test/CodeGen/Mips/llvm-ir/and.ll +++ llvm/trunk/test/CodeGen/Mips/llvm-ir/and.ll @@ -51,10 +51,7 @@ entry: ; ALL-LABEL: and_i32: - ; GP32: and $2, $4, $5 - - ; GP64: and $[[T0:[0-9]+]], $4, $5 - ; GP64: sll $2, $[[T0]], 0 + ; ALL: and $2, $4, $5 %r = and i32 %a, %b ret i32 %r Index: llvm/trunk/test/CodeGen/Mips/llvm-ir/or.ll =================================================================== --- llvm/trunk/test/CodeGen/Mips/llvm-ir/or.ll +++ llvm/trunk/test/CodeGen/Mips/llvm-ir/or.ll @@ -51,11 +51,7 @@ entry: ; ALL-LABEL: or_i32: - ; GP32: or $2, $4, $5 - - ; GP64: or $[[T0:[0-9]+]], $4, $5 - ; FIXME: The sll instruction below is redundant. - ; GP64: sll $2, $[[T0]], 0 + ; ALL: or $2, $4, $5 %r = or i32 %a, %b ret i32 %r Index: llvm/trunk/test/CodeGen/Mips/llvm-ir/xor.ll =================================================================== --- llvm/trunk/test/CodeGen/Mips/llvm-ir/xor.ll +++ llvm/trunk/test/CodeGen/Mips/llvm-ir/xor.ll @@ -51,10 +51,7 @@ entry: ; ALL-LABEL: xor_i32: - ; GP32: xor $2, $4, $5 - - ; GP64: xor $[[T0:[0-9]+]], $4, $5 - ; GP64: sll $2, $[[T0]], 0 + ; ALL: xor $2, $4, $5 %r = xor i32 %a, %b ret i32 %r