diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.h b/llvm/lib/Target/RISCV/RISCVISelLowering.h --- a/llvm/lib/Target/RISCV/RISCVISelLowering.h +++ b/llvm/lib/Target/RISCV/RISCVISelLowering.h @@ -116,6 +116,10 @@ bool convertSetCCLogicToBitwiseLogic(EVT VT) const override { return VT.isScalarInteger(); } + bool shouldNormalizeToSelectSequence(LLVMContext &Ctx, + EVT VT) const override { + return false; + } bool shouldInsertFencesForAtomic(const Instruction *I) const override { return isa(I) || isa(I); diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp --- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp +++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp @@ -228,6 +228,9 @@ // Effectively disable jump table generation. setMinimumJumpTableEntries(INT_MAX); + + // Jumps are expensive, compared to logic + setJumpIsExpensive(); } EVT RISCVTargetLowering::getSetCCResultType(const DataLayout &DL, LLVMContext &, diff --git a/llvm/test/CodeGen/RISCV/double-previous-failure.ll b/llvm/test/CodeGen/RISCV/double-previous-failure.ll --- a/llvm/test/CodeGen/RISCV/double-previous-failure.ll +++ b/llvm/test/CodeGen/RISCV/double-previous-failure.ll @@ -26,20 +26,20 @@ ; RV32IFD-NEXT: lui a0, %hi(.LCPI1_0) ; RV32IFD-NEXT: addi a0, a0, %lo(.LCPI1_0) ; RV32IFD-NEXT: fld ft1, 0(a0) -; RV32IFD-NEXT: flt.d a0, ft0, ft1 -; RV32IFD-NEXT: bnez a0, .LBB1_3 -; RV32IFD-NEXT: # %bb.1: # %entry ; RV32IFD-NEXT: lui a0, %hi(.LCPI1_1) ; RV32IFD-NEXT: addi a0, a0, %lo(.LCPI1_1) -; RV32IFD-NEXT: fld ft1, 0(a0) -; RV32IFD-NEXT: flt.d a0, ft1, ft0 -; RV32IFD-NEXT: xori a0, a0, 1 -; RV32IFD-NEXT: beqz a0, .LBB1_3 -; RV32IFD-NEXT: # %bb.2: # %if.end +; RV32IFD-NEXT: fld ft2, 0(a0) +; RV32IFD-NEXT: flt.d a0, ft0, ft1 +; RV32IFD-NEXT: not a0, a0 +; RV32IFD-NEXT: flt.d a1, ft2, ft0 +; RV32IFD-NEXT: xori a1, a1, 1 +; RV32IFD-NEXT: and a0, a0, a1 +; RV32IFD-NEXT: bnez a0, .LBB1_2 +; RV32IFD-NEXT: # %bb.1: # %if.then +; RV32IFD-NEXT: call abort +; RV32IFD-NEXT: .LBB1_2: # %if.end ; RV32IFD-NEXT: mv a0, zero ; RV32IFD-NEXT: call exit -; RV32IFD-NEXT: .LBB1_3: # %if.then -; RV32IFD-NEXT: call abort entry: %call = call double @test(double 2.000000e+00) %cmp = fcmp olt double %call, 2.400000e-01 diff --git a/llvm/test/CodeGen/RISCV/select-or.ll b/llvm/test/CodeGen/RISCV/select-or.ll --- a/llvm/test/CodeGen/RISCV/select-or.ll +++ b/llvm/test/CodeGen/RISCV/select-or.ll @@ -10,32 +10,28 @@ define signext i32 @select_of_or(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d) nounwind { ; RV32I-LABEL: select_of_or: ; RV32I: # %bb.0: -; RV32I-NEXT: mv a4, a0 -; RV32I-NEXT: bne a2, a3, .LBB0_3 +; RV32I-NEXT: xor a4, a0, a1 +; RV32I-NEXT: seqz a4, a4 +; RV32I-NEXT: xor a2, a2, a3 +; RV32I-NEXT: seqz a2, a2 +; RV32I-NEXT: or a2, a4, a2 +; RV32I-NEXT: bnez a2, .LBB0_2 ; RV32I-NEXT: # %bb.1: -; RV32I-NEXT: bne a0, a1, .LBB0_4 +; RV32I-NEXT: mv a0, a1 ; RV32I-NEXT: .LBB0_2: ; RV32I-NEXT: ret -; RV32I-NEXT: .LBB0_3: -; RV32I-NEXT: mv a4, a1 -; RV32I-NEXT: beq a0, a1, .LBB0_2 -; RV32I-NEXT: .LBB0_4: -; RV32I-NEXT: mv a0, a4 -; RV32I-NEXT: ret ; ; RV64I-LABEL: select_of_or: ; RV64I: # %bb.0: -; RV64I-NEXT: mv a4, a0 -; RV64I-NEXT: bne a2, a3, .LBB0_3 +; RV64I-NEXT: xor a4, a0, a1 +; RV64I-NEXT: seqz a4, a4 +; RV64I-NEXT: xor a2, a2, a3 +; RV64I-NEXT: seqz a2, a2 +; RV64I-NEXT: or a2, a4, a2 +; RV64I-NEXT: bnez a2, .LBB0_2 ; RV64I-NEXT: # %bb.1: -; RV64I-NEXT: bne a0, a1, .LBB0_4 +; RV64I-NEXT: mv a0, a1 ; RV64I-NEXT: .LBB0_2: -; RV64I-NEXT: ret -; RV64I-NEXT: .LBB0_3: -; RV64I-NEXT: mv a4, a1 -; RV64I-NEXT: beq a0, a1, .LBB0_2 -; RV64I-NEXT: .LBB0_4: -; RV64I-NEXT: mv a0, a4 ; RV64I-NEXT: ret %1 = icmp eq i32 %a, %b %2 = icmp eq i32 %c, %d diff --git a/llvm/test/CodeGen/RISCV/zext-with-load-is-free.ll b/llvm/test/CodeGen/RISCV/zext-with-load-is-free.ll --- a/llvm/test/CodeGen/RISCV/zext-with-load-is-free.ll +++ b/llvm/test/CodeGen/RISCV/zext-with-load-is-free.ll @@ -11,17 +11,16 @@ ; RV32I: # %bb.0: # %entry ; RV32I-NEXT: lui a0, %hi(bytes) ; RV32I-NEXT: lbu a1, %lo(bytes)(a0) -; RV32I-NEXT: addi a2, zero, 136 -; RV32I-NEXT: bne a1, a2, .LBB0_3 -; RV32I-NEXT: # %bb.1: # %entry ; RV32I-NEXT: addi a0, a0, %lo(bytes) ; RV32I-NEXT: lbu a0, 1(a0) -; RV32I-NEXT: addi a1, zero, 7 -; RV32I-NEXT: bne a0, a1, .LBB0_3 -; RV32I-NEXT: # %bb.2: # %if.end +; RV32I-NEXT: xori a1, a1, 136 +; RV32I-NEXT: xori a0, a0, 7 +; RV32I-NEXT: or a0, a1, a0 +; RV32I-NEXT: bnez a0, .LBB0_2 +; RV32I-NEXT: # %bb.1: # %if.end ; RV32I-NEXT: mv a0, zero ; RV32I-NEXT: ret -; RV32I-NEXT: .LBB0_3: # %if.then +; RV32I-NEXT: .LBB0_2: # %if.then ; RV32I-NEXT: addi a0, zero, 1 ; RV32I-NEXT: ret entry: @@ -46,18 +45,18 @@ ; RV32I: # %bb.0: # %entry ; RV32I-NEXT: lui a0, %hi(shorts) ; RV32I-NEXT: lhu a1, %lo(shorts)(a0) -; RV32I-NEXT: lui a2, 16 -; RV32I-NEXT: addi a2, a2, -120 -; RV32I-NEXT: bne a1, a2, .LBB1_3 -; RV32I-NEXT: # %bb.1: # %entry ; RV32I-NEXT: addi a0, a0, %lo(shorts) ; RV32I-NEXT: lhu a0, 2(a0) -; RV32I-NEXT: addi a1, zero, 7 -; RV32I-NEXT: bne a0, a1, .LBB1_3 -; RV32I-NEXT: # %bb.2: # %if.end +; RV32I-NEXT: lui a2, 16 +; RV32I-NEXT: addi a2, a2, -120 +; RV32I-NEXT: xor a1, a1, a2 +; RV32I-NEXT: xori a0, a0, 7 +; RV32I-NEXT: or a0, a1, a0 +; RV32I-NEXT: bnez a0, .LBB1_2 +; RV32I-NEXT: # %bb.1: # %if.end ; RV32I-NEXT: mv a0, zero ; RV32I-NEXT: ret -; RV32I-NEXT: .LBB1_3: # %if.then +; RV32I-NEXT: .LBB1_2: # %if.then ; RV32I-NEXT: addi a0, zero, 1 ; RV32I-NEXT: ret entry: