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[LoongArch] Lowering abs to [x]vsigncov #162595

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Merged
merged 1 commit into from
Oct 20, 2025
Merged

[LoongArch] Lowering abs to [x]vsigncov #162595

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8 changes: 4 additions & 4 deletions llvm/lib/Target/LoongArch/LoongArchLASXInstrInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -2025,10 +2025,10 @@ def : Pat<(v4i32(fp_to_uint v4f64:$vj)),
sub_128)>;

// abs
def : Pat<(abs v32i8:$xj), (XVMAX_B v32i8:$xj, (XVNEG_B v32i8:$xj))>;
def : Pat<(abs v16i16:$xj), (XVMAX_H v16i16:$xj, (XVNEG_H v16i16:$xj))>;
def : Pat<(abs v8i32:$xj), (XVMAX_W v8i32:$xj, (XVNEG_W v8i32:$xj))>;
def : Pat<(abs v4i64:$xj), (XVMAX_D v4i64:$xj, (XVNEG_D v4i64:$xj))>;
def : Pat<(abs v32i8:$xj), (XVSIGNCOV_B v32i8:$xj, v32i8:$xj)>;
def : Pat<(abs v16i16:$xj), (XVSIGNCOV_H v16i16:$xj, v16i16:$xj)>;
def : Pat<(abs v8i32:$xj), (XVSIGNCOV_W v8i32:$xj, v8i32:$xj)>;
def : Pat<(abs v4i64:$xj), (XVSIGNCOV_D v4i64:$xj, v4i64:$xj)>;

// XVABSD_{B/H/W/D}[U]
defm : PatXrXr<abds, "XVABSD">;
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8 changes: 4 additions & 4 deletions llvm/lib/Target/LoongArch/LoongArchLSXInstrInfo.td
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Expand Up @@ -2155,10 +2155,10 @@ def : Pat<(f64 f64imm_vldi:$in),
(f64 (EXTRACT_SUBREG (VLDI (to_f64imm_vldi f64imm_vldi:$in)), sub_64))>;

// abs
def : Pat<(abs v16i8:$vj), (VMAX_B v16i8:$vj, (VNEG_B v16i8:$vj))>;
def : Pat<(abs v8i16:$vj), (VMAX_H v8i16:$vj, (VNEG_H v8i16:$vj))>;
def : Pat<(abs v4i32:$vj), (VMAX_W v4i32:$vj, (VNEG_W v4i32:$vj))>;
def : Pat<(abs v2i64:$vj), (VMAX_D v2i64:$vj, (VNEG_D v2i64:$vj))>;
def : Pat<(abs v16i8:$vj), (VSIGNCOV_B v16i8:$vj, v16i8:$vj)>;
def : Pat<(abs v8i16:$vj), (VSIGNCOV_H v8i16:$vj, v8i16:$vj)>;
def : Pat<(abs v4i32:$vj), (VSIGNCOV_W v4i32:$vj, v4i32:$vj)>;
def : Pat<(abs v2i64:$vj), (VSIGNCOV_D v2i64:$vj, v2i64:$vj)>;

// VABSD_{B/H/W/D}[U]
defm : PatVrVr<abds, "VABSD">;
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24 changes: 8 additions & 16 deletions llvm/test/CodeGen/LoongArch/lasx/abs.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,7 @@ define void @vabs_b(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_b:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.b $xr1, $xr0
; CHECK-NEXT: xvmax.b $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.b $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -21,8 +20,7 @@ define void @vabs_b_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_b_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.b $xr1, $xr0
; CHECK-NEXT: xvmax.b $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.b $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -36,8 +34,7 @@ define void @vabs_h(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_h:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.h $xr1, $xr0
; CHECK-NEXT: xvmax.h $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.h $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -51,8 +48,7 @@ define void @vabs_h_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_h_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.h $xr1, $xr0
; CHECK-NEXT: xvmax.h $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.h $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -66,8 +62,7 @@ define void @vabs_w(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_w:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.w $xr1, $xr0
; CHECK-NEXT: xvmax.w $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.w $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -81,8 +76,7 @@ define void @vabs_w_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_w_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.w $xr1, $xr0
; CHECK-NEXT: xvmax.w $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.w $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -96,8 +90,7 @@ define void @vabs_d(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_d:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.d $xr1, $xr0
; CHECK-NEXT: xvmax.d $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.d $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -111,8 +104,7 @@ define void @vabs_d_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_d_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xvld $xr0, $a1, 0
; CHECK-NEXT: xvneg.d $xr1, $xr0
; CHECK-NEXT: xvmax.d $xr0, $xr0, $xr1
; CHECK-NEXT: xvsigncov.d $xr0, $xr0, $xr0
; CHECK-NEXT: xvst $xr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand Down
24 changes: 8 additions & 16 deletions llvm/test/CodeGen/LoongArch/lsx/abs.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,7 @@ define void @vabs_b(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_b:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.b $vr1, $vr0
; CHECK-NEXT: vmax.b $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.b $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -21,8 +20,7 @@ define void @vabs_b_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_b_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.b $vr1, $vr0
; CHECK-NEXT: vmax.b $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.b $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -36,8 +34,7 @@ define void @vabs_h(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_h:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.h $vr1, $vr0
; CHECK-NEXT: vmax.h $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.h $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -51,8 +48,7 @@ define void @vabs_h_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_h_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.h $vr1, $vr0
; CHECK-NEXT: vmax.h $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.h $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -66,8 +62,7 @@ define void @vabs_w(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_w:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.w $vr1, $vr0
; CHECK-NEXT: vmax.w $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.w $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -81,8 +76,7 @@ define void @vabs_w_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_w_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.w $vr1, $vr0
; CHECK-NEXT: vmax.w $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.w $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -96,8 +90,7 @@ define void @vabs_d(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_d:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.d $vr1, $vr0
; CHECK-NEXT: vmax.d $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.d $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand All @@ -111,8 +104,7 @@ define void @vabs_d_1(ptr %dst, ptr %src) {
; CHECK-LABEL: vabs_d_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vld $vr0, $a1, 0
; CHECK-NEXT: vneg.d $vr1, $vr0
; CHECK-NEXT: vmax.d $vr0, $vr0, $vr1
; CHECK-NEXT: vsigncov.d $vr0, $vr0, $vr0
; CHECK-NEXT: vst $vr0, $a0, 0
; CHECK-NEXT: ret
entry:
Expand Down