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release/20.x: [LoongArch] Fix fp_to_uint/fp_to_sint conversion errors for lasx (#137129) #139851

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Merged
merged 1 commit into from
May 16, 2025
Merged

release/20.x: [LoongArch] Fix fp_to_uint/fp_to_sint conversion errors for lasx (#137129) #139851

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28 changes: 14 additions & 14 deletions llvm/lib/Target/LoongArch/LoongArchLASXInstrInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -1792,24 +1792,24 @@ def : Pat<(v4f32 (uint_to_fp v4i64:$vj)),
// XVFTINTRZ_{W_S/L_D}
def : Pat<(v8i32 (fp_to_sint v8f32:$vj)), (XVFTINTRZ_W_S v8f32:$vj)>;
def : Pat<(v4i64 (fp_to_sint v4f64:$vj)), (XVFTINTRZ_L_D v4f64:$vj)>;
def : Pat<(v4i64 (fp_to_sint v4f32:$vj)),
(VEXT2XV_D_W (SUBREG_TO_REG (i64 0), (VFTINTRZ_W_S v4f32:$vj),
sub_128))>;
def : Pat<(v4i32 (fp_to_sint (v4f64 LASX256:$vj))),
(EXTRACT_SUBREG (XVFTINTRZ_W_S (XVFCVT_S_D (XVPERMI_D v4f64:$vj, 238),
v4f64:$vj)),
sub_128)>;
def : Pat<(v4i64(fp_to_sint v4f32:$vj)), (VEXT2XV_D_W(SUBREG_TO_REG(i64 0),
(VFTINTRZ_W_S v4f32:$vj),
sub_128))>;
def : Pat<(v4i32(fp_to_sint v4f64:$vj)),
(EXTRACT_SUBREG(XVPICKEV_W(XVPERMI_D(XVFTINTRZ_L_D v4f64:$vj), 238),
(XVFTINTRZ_L_D v4f64:$vj)),
sub_128)>;

// XVFTINTRZ_{W_SU/L_DU}
def : Pat<(v8i32 (fp_to_uint v8f32:$vj)), (XVFTINTRZ_WU_S v8f32:$vj)>;
def : Pat<(v4i64 (fp_to_uint v4f64:$vj)), (XVFTINTRZ_LU_D v4f64:$vj)>;
def : Pat<(v4i64 (fp_to_uint v4f32:$vj)),
(VEXT2XV_DU_WU (SUBREG_TO_REG (i64 0), (VFTINTRZ_WU_S v4f32:$vj),
sub_128))>;
def : Pat<(v4i32 (fp_to_uint (v4f64 LASX256:$vj))),
(EXTRACT_SUBREG (XVFTINTRZ_W_S (XVFCVT_S_D (XVPERMI_D v4f64:$vj, 238),
v4f64:$vj)),
sub_128)>;
def : Pat<(v4i64(fp_to_uint v4f32:$vj)), (VEXT2XV_DU_WU(SUBREG_TO_REG(i64 0),
(VFTINTRZ_WU_S v4f32:$vj),
sub_128))>;
def : Pat<(v4i32(fp_to_uint v4f64:$vj)),
(EXTRACT_SUBREG(XVPICKEV_W(XVPERMI_D(XVFTINTRZ_LU_D v4f64:$vj), 238),
(XVFTINTRZ_LU_D v4f64:$vj)),
sub_128)>;

// XVPERMI_Q
foreach vt = [v32i8, v16i16, v8i32, v4i64, v8f32, v4f64] in
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4 changes: 2 additions & 2 deletions llvm/test/CodeGen/LoongArch/lasx/ir-instruction/fptosi.ll
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Expand Up @@ -31,9 +31,9 @@ define void @fptosi_v4f64_v4i32(ptr %res, ptr %in){
; CHECK-LABEL: fptosi_v4f64_v4i32:
; CHECK: # %bb.0:
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvftintrz.l.d $xr0, $xr0
; CHECK-NEXT: xvpermi.d $xr1, $xr0, 238
; CHECK-NEXT: xvfcvt.s.d $xr0, $xr1, $xr0
; CHECK-NEXT: xvftintrz.w.s $xr0, $xr0
; CHECK-NEXT: xvpickev.w $xr0, $xr1, $xr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
%v0 = load <4 x double>, ptr %in
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4 changes: 2 additions & 2 deletions llvm/test/CodeGen/LoongArch/lasx/ir-instruction/fptoui.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -31,9 +31,9 @@ define void @fptoui_v4f64_v4i32(ptr %res, ptr %in){
; CHECK-LABEL: fptoui_v4f64_v4i32:
; CHECK: # %bb.0:
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvftintrz.lu.d $xr0, $xr0
; CHECK-NEXT: xvpermi.d $xr1, $xr0, 238
; CHECK-NEXT: xvfcvt.s.d $xr0, $xr1, $xr0
; CHECK-NEXT: xvftintrz.w.s $xr0, $xr0
; CHECK-NEXT: xvpickev.w $xr0, $xr1, $xr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
%v0 = load <4 x double>, ptr %in
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