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llvm-project/llvm/test/CodeGen/RISCV/float-arith.ll

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV32IF %s
; RUN: llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV64IF %s
; These tests are each targeted at a particular RISC-V FPU instruction. Most
; other files in this folder exercise LLVM IR instructions that don't directly
; match a RISC-V instruction.
define float @fadd_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fadd_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fadd.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fadd_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fadd.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fadd float %a, %b
ret float %1
}
define float @fsub_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fsub_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fsub.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fsub_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fsub.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fsub float %a, %b
ret float %1
}
define float @fmul_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fmul_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fmul.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fmul_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fmul.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fmul float %a, %b
ret float %1
}
define float @fdiv_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fdiv_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fdiv.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fdiv_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fdiv.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fdiv float %a, %b
ret float %1
}
declare float @llvm.sqrt.f32(float)
define float @fsqrt_s(float %a) nounwind {
; RV32IF-LABEL: fsqrt_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a0
; RV32IF-NEXT: fsqrt.s ft0, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fsqrt_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a0
; RV64IF-NEXT: fsqrt.s ft0, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = call float @llvm.sqrt.f32(float %a)
ret float %1
}
declare float @llvm.copysign.f32(float, float)
define float @fsgnj_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fsgnj_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fsgnj.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fsgnj_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fsgnj.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = call float @llvm.copysign.f32(float %a, float %b)
ret float %1
}
; This function performs extra work to ensure that
; DAGCombiner::visitBITCAST doesn't replace the fneg with an xor.
define i32 @fneg_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fneg_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a0
; RV32IF-NEXT: fadd.s ft0, ft0, ft0
; RV32IF-NEXT: fneg.s ft1, ft0
; RV32IF-NEXT: feq.s a0, ft0, ft1
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fneg_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a0
; RV64IF-NEXT: fadd.s ft0, ft0, ft0
; RV64IF-NEXT: fneg.s ft1, ft0
; RV64IF-NEXT: feq.s a0, ft0, ft1
; RV64IF-NEXT: ret
%1 = fadd float %a, %a
%2 = fneg float %1
%3 = fcmp oeq float %1, %2
%4 = zext i1 %3 to i32
ret i32 %4
}
; This function performs extra work to ensure that
; DAGCombiner::visitBITCAST doesn't replace the fneg with an xor.
define float @fsgnjn_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fsgnjn_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fadd.s ft0, ft1, ft0
; RV32IF-NEXT: fsgnjn.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fsgnjn_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fadd.s ft0, ft1, ft0
; RV64IF-NEXT: fsgnjn.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fadd float %a, %b
%2 = fneg float %1
%3 = call float @llvm.copysign.f32(float %a, float %2)
ret float %3
}
declare float @llvm.fabs.f32(float)
; This function performs extra work to ensure that
; DAGCombiner::visitBITCAST doesn't replace the fabs with an and.
define float @fabs_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fabs_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fadd.s ft0, ft1, ft0
; RV32IF-NEXT: fabs.s ft1, ft0
; RV32IF-NEXT: fadd.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fabs_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fadd.s ft0, ft1, ft0
; RV64IF-NEXT: fabs.s ft1, ft0
; RV64IF-NEXT: fadd.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = fadd float %a, %b
%2 = call float @llvm.fabs.f32(float %1)
%3 = fadd float %2, %1
ret float %3
}
declare float @llvm.minnum.f32(float, float)
define float @fmin_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fmin_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fmin.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fmin_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fmin.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = call float @llvm.minnum.f32(float %a, float %b)
ret float %1
}
declare float @llvm.maxnum.f32(float, float)
define float @fmax_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fmax_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fmax.s ft0, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fmax_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fmax.s ft0, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = call float @llvm.maxnum.f32(float %a, float %b)
ret float %1
}
define i32 @feq_s(float %a, float %b) nounwind {
; RV32IF-LABEL: feq_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: feq.s a0, ft1, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: feq_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: feq.s a0, ft1, ft0
; RV64IF-NEXT: ret
%1 = fcmp oeq float %a, %b
%2 = zext i1 %1 to i32
ret i32 %2
}
define i32 @flt_s(float %a, float %b) nounwind {
; RV32IF-LABEL: flt_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: flt.s a0, ft1, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: flt_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: flt.s a0, ft1, ft0
; RV64IF-NEXT: ret
%1 = fcmp olt float %a, %b
%2 = zext i1 %1 to i32
ret i32 %2
}
define i32 @fle_s(float %a, float %b) nounwind {
; RV32IF-LABEL: fle_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a1
; RV32IF-NEXT: fmv.w.x ft1, a0
; RV32IF-NEXT: fle.s a0, ft1, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fle_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a1
; RV64IF-NEXT: fmv.w.x ft1, a0
; RV64IF-NEXT: fle.s a0, ft1, ft0
; RV64IF-NEXT: ret
%1 = fcmp ole float %a, %b
%2 = zext i1 %1 to i32
ret i32 %2
}
declare float @llvm.fma.f32(float, float, float)
define float @fmadd_s(float %a, float %b, float %c) nounwind {
; RV32IF-LABEL: fmadd_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: fmv.w.x ft0, a2
; RV32IF-NEXT: fmv.w.x ft1, a1
; RV32IF-NEXT: fmv.w.x ft2, a0
; RV32IF-NEXT: fmadd.s ft0, ft2, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fmadd_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: fmv.w.x ft0, a2
; RV64IF-NEXT: fmv.w.x ft1, a1
; RV64IF-NEXT: fmv.w.x ft2, a0
; RV64IF-NEXT: fmadd.s ft0, ft2, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%1 = call float @llvm.fma.f32(float %a, float %b, float %c)
ret float %1
}
define float @fmsub_s(float %a, float %b, float %c) nounwind {
; RV32IF-LABEL: fmsub_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: lui a3, %hi(.LCPI15_0)
; RV32IF-NEXT: addi a3, a3, %lo(.LCPI15_0)
; RV32IF-NEXT: flw ft0, 0(a3)
; RV32IF-NEXT: fmv.w.x ft1, a1
; RV32IF-NEXT: fmv.w.x ft2, a0
; RV32IF-NEXT: fmv.w.x ft3, a2
; RV32IF-NEXT: fadd.s ft0, ft3, ft0
; RV32IF-NEXT: fmsub.s ft0, ft2, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fmsub_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: lui a3, %hi(.LCPI15_0)
; RV64IF-NEXT: addi a3, a3, %lo(.LCPI15_0)
; RV64IF-NEXT: flw ft0, 0(a3)
; RV64IF-NEXT: fmv.w.x ft1, a1
; RV64IF-NEXT: fmv.w.x ft2, a0
; RV64IF-NEXT: fmv.w.x ft3, a2
; RV64IF-NEXT: fadd.s ft0, ft3, ft0
; RV64IF-NEXT: fmsub.s ft0, ft2, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%c_ = fadd float 0.0, %c ; avoid negation using xor
%negc = fsub float -0.0, %c_
%1 = call float @llvm.fma.f32(float %a, float %b, float %negc)
ret float %1
}
define float @fnmadd_s(float %a, float %b, float %c) nounwind {
; RV32IF-LABEL: fnmadd_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: lui a3, %hi(.LCPI16_0)
; RV32IF-NEXT: addi a3, a3, %lo(.LCPI16_0)
; RV32IF-NEXT: flw ft0, 0(a3)
; RV32IF-NEXT: fmv.w.x ft1, a1
; RV32IF-NEXT: fmv.w.x ft2, a2
; RV32IF-NEXT: fmv.w.x ft3, a0
; RV32IF-NEXT: fadd.s ft3, ft3, ft0
; RV32IF-NEXT: fadd.s ft0, ft2, ft0
; RV32IF-NEXT: fnmadd.s ft0, ft3, ft1, ft0
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fnmadd_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: lui a3, %hi(.LCPI16_0)
; RV64IF-NEXT: addi a3, a3, %lo(.LCPI16_0)
; RV64IF-NEXT: flw ft0, 0(a3)
; RV64IF-NEXT: fmv.w.x ft1, a1
; RV64IF-NEXT: fmv.w.x ft2, a2
; RV64IF-NEXT: fmv.w.x ft3, a0
; RV64IF-NEXT: fadd.s ft3, ft3, ft0
; RV64IF-NEXT: fadd.s ft0, ft2, ft0
; RV64IF-NEXT: fnmadd.s ft0, ft3, ft1, ft0
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%a_ = fadd float 0.0, %a
%c_ = fadd float 0.0, %c
%nega = fsub float -0.0, %a_
%negc = fsub float -0.0, %c_
%1 = call float @llvm.fma.f32(float %nega, float %b, float %negc)
ret float %1
}
define float @fnmsub_s(float %a, float %b, float %c) nounwind {
; RV32IF-LABEL: fnmsub_s:
; RV32IF: # %bb.0:
; RV32IF-NEXT: lui a3, %hi(.LCPI17_0)
; RV32IF-NEXT: addi a3, a3, %lo(.LCPI17_0)
; RV32IF-NEXT: flw ft0, 0(a3)
; RV32IF-NEXT: fmv.w.x ft1, a2
; RV32IF-NEXT: fmv.w.x ft2, a1
; RV32IF-NEXT: fmv.w.x ft3, a0
; RV32IF-NEXT: fadd.s ft0, ft3, ft0
; RV32IF-NEXT: fnmsub.s ft0, ft0, ft2, ft1
; RV32IF-NEXT: fmv.x.w a0, ft0
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: fnmsub_s:
; RV64IF: # %bb.0:
; RV64IF-NEXT: lui a3, %hi(.LCPI17_0)
; RV64IF-NEXT: addi a3, a3, %lo(.LCPI17_0)
; RV64IF-NEXT: flw ft0, 0(a3)
; RV64IF-NEXT: fmv.w.x ft1, a2
; RV64IF-NEXT: fmv.w.x ft2, a1
; RV64IF-NEXT: fmv.w.x ft3, a0
; RV64IF-NEXT: fadd.s ft0, ft3, ft0
; RV64IF-NEXT: fnmsub.s ft0, ft0, ft2, ft1
; RV64IF-NEXT: fmv.x.w a0, ft0
; RV64IF-NEXT: ret
%a_ = fadd float 0.0, %a
%nega = fsub float -0.0, %a_
%1 = call float @llvm.fma.f32(float %nega, float %b, float %c)
ret float %1
}
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