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[RISCV] Add additional half precision fnmadd/fnmsub tests with an fneg on the second operand instead of the first. 

This matches the float/double tests added in defe11866a
This commit is contained in:
Craig Topper 2020-12-02 21:03:05 -08:00
parent e52a91e156
commit 1ccd36161d
1 changed files with 44 additions and 0 deletions
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44
llvm/test/CodeGen/RISCV/half-arith.ll
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@ -302,6 +302,30 @@ define half @fnmadd_s(half %a, half %b, half %c) nounwind {
ret half %1
}
define half @fnmadd_s_2(half %a, half %b, half %c) nounwind {
; RV32IZFH-LABEL: fnmadd_s_2:
; RV32IZFH: # %bb.0:
; RV32IZFH-NEXT: fmv.h.x ft0, zero
; RV32IZFH-NEXT: fadd.h ft1, fa1, ft0
; RV32IZFH-NEXT: fadd.h ft0, fa2, ft0
; RV32IZFH-NEXT: fnmadd.h fa0, ft1, fa0, ft0
; RV32IZFH-NEXT: ret
;
; RV64IZFH-LABEL: fnmadd_s_2:
; RV64IZFH: # %bb.0:
; RV64IZFH-NEXT: fmv.h.x ft0, zero
; RV64IZFH-NEXT: fadd.h ft1, fa1, ft0
; RV64IZFH-NEXT: fadd.h ft0, fa2, ft0
; RV64IZFH-NEXT: fnmadd.h fa0, ft1, fa0, ft0
; RV64IZFH-NEXT: ret
%b_ = fadd half 0.0, %b
%c_ = fadd half 0.0, %c
%negb = fsub half -0.0, %b_
%negc = fsub half -0.0, %c_
%1 = call half @llvm.fma.f16(half %a, half %negb, half %negc)
ret half %1
}
define half @fnmsub_s(half %a, half %b, half %c) nounwind {
; RV32IZFH-LABEL: fnmsub_s:
; RV32IZFH: # %bb.0:
@ -322,6 +346,26 @@ define half @fnmsub_s(half %a, half %b, half %c) nounwind {
ret half %1
}
define half @fnmsub_s_2(half %a, half %b, half %c) nounwind {
; RV32IZFH-LABEL: fnmsub_s_2:
; RV32IZFH: # %bb.0:
; RV32IZFH-NEXT: fmv.h.x ft0, zero
; RV32IZFH-NEXT: fadd.h ft0, fa1, ft0
; RV32IZFH-NEXT: fnmsub.h fa0, ft0, fa0, fa2
; RV32IZFH-NEXT: ret
;
; RV64IZFH-LABEL: fnmsub_s_2:
; RV64IZFH: # %bb.0:
; RV64IZFH-NEXT: fmv.h.x ft0, zero
; RV64IZFH-NEXT: fadd.h ft0, fa1, ft0
; RV64IZFH-NEXT: fnmsub.h fa0, ft0, fa0, fa2
; RV64IZFH-NEXT: ret
%b_ = fadd half 0.0, %b
%negb = fsub half -0.0, %b_
%1 = call half @llvm.fma.f16(half %a, half %negb, half %c)
ret half %1
}
define half @fmadd_s_contract(half %a, half %b, half %c) nounwind {
; RV32IZFH-LABEL: fmadd_s_contract:
; RV32IZFH: # %bb.0: