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[DAGCombiner] Reassociate the operands from (OR (OR(CMP1, CMP2)), CMP3) to (OR (OR(CMP1, CMP3)), CMP2)
This happens when CMP1 and CMP3 have the same predicate (or CMP2 and CMP3 have the same predicate). This helps optimizations such as the fololowing one: CMP(A,C)||CMP(B,C) => CMP(MIN/MAX(A,B), C) CMP(A,C)&&CMP(B,C) => CMP(MIN/MAX(A,B), C) Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D156215
This commit is contained in:
Konstantina Mitropoulou
parent
51202b8d2e
commit
2c5d1b5ab7
@ -1334,6 +1334,30 @@ SDValue DAGCombiner::reassociateOpsCommutative(unsigned Opc, const SDLoc &DL,
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return DAG.getNode(Opc, DL, VT, SDValue(NE, 0), N00);
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}
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}
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// Reassociate the operands from (OR/AND (OR/AND(N00, N001)), N1) to (OR/AND
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// (OR/AND(N00, N1)), N01) when N00 and N1 are comparisons with the same
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// predicate or to (OR/AND (OR/AND(N1, N01)), N00) when N01 and N1 are
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// comparisons with the same predicate. This enables optimizations as the
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// following one:
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// CMP(A,C)||CMP(B,C) => CMP(MIN/MAX(A,B), C)
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// CMP(A,C)&&CMP(B,C) => CMP(MIN/MAX(A,B), C)
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if (Opc == ISD::AND || Opc == ISD::OR) {
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if (N1->getOpcode() == ISD::SETCC && N00->getOpcode() == ISD::SETCC &&
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N01->getOpcode() == ISD::SETCC) {
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ISD::CondCode CC1 = cast<CondCodeSDNode>(N1.getOperand(2))->get();
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ISD::CondCode CC00 = cast<CondCodeSDNode>(N00.getOperand(2))->get();
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ISD::CondCode CC01 = cast<CondCodeSDNode>(N01.getOperand(2))->get();
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if (CC1 == CC00 && CC1 != CC01) {
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SDValue OpNode = DAG.getNode(Opc, SDLoc(N0), VT, N00, N1, Flags);
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return DAG.getNode(Opc, DL, VT, OpNode, N01, Flags);
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}
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if (CC1 == CC01 && CC1 != CC00) {
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SDValue OpNode = DAG.getNode(Opc, SDLoc(N0), VT, N01, N1, Flags);
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return DAG.getNode(Opc, DL, VT, OpNode, N00, Flags);
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}
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}
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}
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}
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return SDValue();
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@ -1722,14 +1722,12 @@ define i1 @test103(i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4, i32 %arg5, i32 %a
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; CHECK-LABEL: test103:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; CHECK-NEXT: v_max_u32_e32 v0, v0, v1
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; CHECK-NEXT: v_max_u32_e32 v1, v2, v3
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; CHECK-NEXT: v_max_u32_e32 v2, v4, v5
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; CHECK-NEXT: v_cmp_lt_u32_e32 vcc_lo, v0, v6
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; CHECK-NEXT: v_cmp_gt_u32_e64 s0, v1, v6
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; CHECK-NEXT: v_cmp_lt_u32_e64 s1, v2, v6
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; CHECK-NEXT: s_or_b32 s0, vcc_lo, s0
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; CHECK-NEXT: s_or_b32 s0, s0, s1
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; CHECK-NEXT: v_max_u32_e32 v4, v4, v5
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; CHECK-NEXT: v_max_u32_e32 v2, v2, v3
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; CHECK-NEXT: v_maxmin_u32 v0, v0, v1, v4
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; CHECK-NEXT: v_cmp_gt_u32_e32 vcc_lo, v2, v6
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; CHECK-NEXT: v_cmp_lt_u32_e64 s0, v0, v6
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; CHECK-NEXT: s_or_b32 s0, s0, vcc_lo
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; CHECK-NEXT: v_cndmask_b32_e64 v0, 0, 1, s0
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; CHECK-NEXT: s_setpc_b64 s[30:31]
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%cmp1 = icmp ult i32 %arg1, %C
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@ -1751,20 +1749,18 @@ define i1 @test104(i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4, i32 %arg5, i32 %a
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; CHECK-LABEL: test104:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; CHECK-NEXT: v_min_u32_e32 v0, v0, v1
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; CHECK-NEXT: v_max_u32_e32 v1, v2, v3
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; CHECK-NEXT: v_min_u32_e32 v2, v4, v5
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; CHECK-NEXT: v_max_u32_e32 v3, v6, v7
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; CHECK-NEXT: v_min_u32_e32 v4, v8, v9
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; CHECK-NEXT: v_cmp_lt_u32_e32 vcc_lo, v0, v10
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; CHECK-NEXT: v_cmp_gt_u32_e64 s0, v1, v10
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; CHECK-NEXT: v_cmp_lt_u32_e64 s1, v2, v10
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; CHECK-NEXT: v_cmp_gt_u32_e64 s2, v3, v10
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; CHECK-NEXT: v_cmp_lt_u32_e64 s3, v4, v10
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; CHECK-NEXT: s_or_b32 s0, vcc_lo, s0
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; CHECK-NEXT: s_or_b32 s1, s1, s2
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; CHECK-NEXT: s_or_b32 s0, s3, s0
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; CHECK-NEXT: s_or_b32 s0, s1, s0
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; CHECK-NEXT: v_min_u32_e32 v8, v8, v9
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; CHECK-NEXT: v_max_u32_e32 v2, v2, v3
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; CHECK-NEXT: v_min_u32_e32 v3, v4, v5
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; CHECK-NEXT: v_max_u32_e32 v4, v6, v7
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; CHECK-NEXT: v_min3_u32 v0, v0, v1, v8
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; CHECK-NEXT: v_cmp_gt_u32_e32 vcc_lo, v2, v10
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; CHECK-NEXT: v_cmp_lt_u32_e64 s0, v3, v10
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; CHECK-NEXT: v_cmp_gt_u32_e64 s1, v4, v10
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; CHECK-NEXT: v_cmp_lt_u32_e64 s2, v0, v10
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; CHECK-NEXT: s_or_b32 s0, s0, s1
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; CHECK-NEXT: s_or_b32 s1, s2, vcc_lo
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; CHECK-NEXT: s_or_b32 s0, s0, s1
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; CHECK-NEXT: v_cndmask_b32_e64 v0, 0, 1, s0
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; CHECK-NEXT: s_setpc_b64 s[30:31]
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%cmp1 = icmp ult i32 %arg1, %C
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@ -1476,9 +1476,9 @@ define amdgpu_kernel void @test_preserve_condition_undef_flag(float %arg, i32 %a
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; GFX1032-NEXT: s_load_dword s2, s[0:1], 0x2c
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; GFX1032-NEXT: s_load_dword s3, s[0:1], 0x24
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; GFX1032-NEXT: s_waitcnt lgkmcnt(0)
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; GFX1032-NEXT: v_cmp_ngt_f32_e64 s0, s2, 0
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; GFX1032-NEXT: v_cmp_nlt_f32_e64 s1, s2, 1.0
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; GFX1032-NEXT: v_cmp_nlt_f32_e64 s2, s3, 1.0
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; GFX1032-NEXT: v_cmp_nlt_f32_e64 s0, s2, 1.0
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; GFX1032-NEXT: v_cmp_nlt_f32_e64 s1, s3, 1.0
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; GFX1032-NEXT: v_cmp_ngt_f32_e64 s2, s2, 0
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; GFX1032-NEXT: s_or_b32 s0, s0, s1
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; GFX1032-NEXT: s_or_b32 s0, s0, s2
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; GFX1032-NEXT: s_and_b32 vcc_lo, exec_lo, s0
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@ -1493,12 +1493,12 @@ define amdgpu_kernel void @test_preserve_condition_undef_flag(float %arg, i32 %a
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; GFX1064-LABEL: test_preserve_condition_undef_flag:
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; GFX1064: ; %bb.0: ; %bb0
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; GFX1064-NEXT: s_clause 0x1
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; GFX1064-NEXT: s_load_dword s2, s[0:1], 0x2c
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; GFX1064-NEXT: s_load_dword s4, s[0:1], 0x24
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; GFX1064-NEXT: s_load_dword s4, s[0:1], 0x2c
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; GFX1064-NEXT: s_load_dword s2, s[0:1], 0x24
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; GFX1064-NEXT: s_waitcnt lgkmcnt(0)
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; GFX1064-NEXT: v_cmp_ngt_f32_e64 s[0:1], s2, 0
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; GFX1064-NEXT: v_cmp_nlt_f32_e64 s[0:1], s4, 1.0
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; GFX1064-NEXT: v_cmp_nlt_f32_e64 s[2:3], s2, 1.0
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; GFX1064-NEXT: v_cmp_nlt_f32_e64 s[4:5], s4, 1.0
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; GFX1064-NEXT: v_cmp_ngt_f32_e64 s[4:5], s4, 0
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; GFX1064-NEXT: s_or_b64 s[0:1], s[0:1], s[2:3]
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; GFX1064-NEXT: s_or_b64 s[0:1], s[0:1], s[4:5]
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; GFX1064-NEXT: s_and_b64 vcc, exec, s[0:1]
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@ -1250,13 +1250,16 @@ define <4 x i16> @f35(<4 x i16> %a0, <4 x i16> %a1, <4 x i16> %a2) #1 {
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; CHECK-NEXT: p0 = vcmph.eq(r1:0,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p1 = vcmph.eq(r3:2,r7:6)
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; CHECK-NEXT: p1 = vcmph.eq(r5:4,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p2 = vcmph.eq(r5:4,r7:6)
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; CHECK-NEXT: p2 = vcmph.eq(r3:2,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = and(p2,and(p0,!p1))
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; CHECK-NEXT: p0 = and(p0,p1)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = and(p0,!p2)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r1:0 = mask(p0)
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@ -1364,13 +1367,16 @@ define <4 x i16> @f38(<4 x i16> %a0, <4 x i16> %a1, <4 x i16> %a2) #1 {
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; CHECK-NEXT: p0 = vcmph.eq(r1:0,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p1 = vcmph.eq(r3:2,r7:6)
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; CHECK-NEXT: p1 = vcmph.eq(r5:4,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p2 = vcmph.eq(r5:4,r7:6)
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; CHECK-NEXT: p2 = vcmph.eq(r3:2,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = or(p2,or(p0,!p1))
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; CHECK-NEXT: p0 = or(p0,p1)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = or(p0,!p2)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r1:0 = mask(p0)
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@ -1712,13 +1718,16 @@ define <8 x i8> @f48(<8 x i8> %a0, <8 x i8> %a1, <8 x i8> %a2) #1 {
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; CHECK-NEXT: p0 = vcmpb.eq(r1:0,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p1 = vcmpb.eq(r3:2,r7:6)
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; CHECK-NEXT: p1 = vcmpb.eq(r5:4,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p2 = vcmpb.eq(r5:4,r7:6)
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; CHECK-NEXT: p2 = vcmpb.eq(r3:2,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = and(p2,and(p0,!p1))
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; CHECK-NEXT: p0 = and(p0,p1)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = and(p0,!p2)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r1:0 = mask(p0)
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@ -1826,13 +1835,16 @@ define <8 x i8> @f51(<8 x i8> %a0, <8 x i8> %a1, <8 x i8> %a2) #1 {
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; CHECK-NEXT: p0 = vcmpb.eq(r1:0,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p1 = vcmpb.eq(r3:2,r7:6)
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; CHECK-NEXT: p1 = vcmpb.eq(r5:4,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p2 = vcmpb.eq(r5:4,r7:6)
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; CHECK-NEXT: p2 = vcmpb.eq(r3:2,r7:6)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = or(p2,or(p0,!p1))
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; CHECK-NEXT: p0 = or(p0,p1)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: p0 = or(p0,!p2)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r1:0 = mask(p0)
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@ -1402,9 +1402,9 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
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; X86-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}, %ymm0, %ymm2
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; X86-NEXT: vxorps %xmm3, %xmm3, %xmm3
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; X86-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X86-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X86-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}, %ymm0, %ymm3
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; X86-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X86-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}, %ymm0, %ymm4
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; X86-NEXT: vandps %ymm4, %ymm3, %ymm3
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; X86-NEXT: vandps %ymm2, %ymm3, %ymm2
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; X86-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}, %ymm0, %ymm3
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; X86-NEXT: vxorps %ymm1, %ymm3, %ymm1
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; X86-NEXT: vxorps %ymm2, %ymm1, %ymm1
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@ -1419,9 +1419,9 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
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; X64-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm2
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; X64-NEXT: vxorps %xmm3, %xmm3, %xmm3
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; X64-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X64-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X64-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm3
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; X64-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X64-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm4
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; X64-NEXT: vandps %ymm4, %ymm3, %ymm3
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; X64-NEXT: vandps %ymm2, %ymm3, %ymm2
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; X64-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm3
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; X64-NEXT: vxorps %ymm1, %ymm3, %ymm1
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; X64-NEXT: vxorps %ymm2, %ymm1, %ymm1
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@ -1437,10 +1437,10 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
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; X86-AVX2-NEXT: vcmpltps %ymm2, %ymm0, %ymm2
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; X86-AVX2-NEXT: vxorps %xmm3, %xmm3, %xmm3
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; X86-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X86-AVX2-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X86-AVX2-NEXT: vbroadcastss {{.*#+}} ymm3 = [1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1]
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; X86-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X86-AVX2-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X86-AVX2-NEXT: vbroadcastss {{.*#+}} ymm4 = [1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1]
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; X86-AVX2-NEXT: vcmpneqps %ymm4, %ymm0, %ymm4
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; X86-AVX2-NEXT: vandps %ymm4, %ymm3, %ymm3
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; X86-AVX2-NEXT: vandps %ymm2, %ymm3, %ymm2
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; X86-AVX2-NEXT: vbroadcastss {{.*#+}} ymm3 = [2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1]
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; X86-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X86-AVX2-NEXT: vxorps %ymm1, %ymm3, %ymm1
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@ -1458,10 +1458,10 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
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; X64-AVX2-NEXT: vcmpltps %ymm2, %ymm0, %ymm2
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; X64-AVX2-NEXT: vxorps %xmm3, %xmm3, %xmm3
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; X64-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X64-AVX2-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X64-AVX2-NEXT: vbroadcastss {{.*#+}} ymm3 = [1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1]
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; X64-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X64-AVX2-NEXT: vandps %ymm3, %ymm2, %ymm2
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; X64-AVX2-NEXT: vbroadcastss {{.*#+}} ymm4 = [1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1,1.00000001E-1]
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; X64-AVX2-NEXT: vcmpneqps %ymm4, %ymm0, %ymm4
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; X64-AVX2-NEXT: vandps %ymm4, %ymm3, %ymm3
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; X64-AVX2-NEXT: vandps %ymm2, %ymm3, %ymm2
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; X64-AVX2-NEXT: vbroadcastss {{.*#+}} ymm3 = [2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1,2.00000003E-1]
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; X64-AVX2-NEXT: vcmpneqps %ymm3, %ymm0, %ymm3
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; X64-AVX2-NEXT: vxorps %ymm1, %ymm3, %ymm1
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||||
@ -1476,8 +1476,8 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
|
||||
; X86-AVX512-NEXT: vcmpgeps {{\.?LCPI[0-9]+_[0-9]+}}{1to8}, %ymm0, %k0
|
||||
; X86-AVX512-NEXT: vxorps %xmm1, %xmm1, %xmm1
|
||||
; X86-AVX512-NEXT: vcmpneqps %ymm1, %ymm0, %k1
|
||||
; X86-AVX512-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}{1to8}, %ymm0, %k1 {%k1}
|
||||
; X86-AVX512-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}{1to8}, %ymm0, %k1 {%k1}
|
||||
; X86-AVX512-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}{1to8}, %ymm0, %k1 {%k1}
|
||||
; X86-AVX512-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}{1to8}, %ymm0, %k2
|
||||
; X86-AVX512-NEXT: kxorw %k0, %k2, %k0
|
||||
; X86-AVX512-NEXT: kxorw %k1, %k0, %k0
|
||||
@ -1492,8 +1492,8 @@ define <8 x i32> @six_or_and_xor(<8 x float> %x) {
|
||||
; X64-AVX512-NEXT: vcmpgeps {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to8}, %ymm0, %k0
|
||||
; X64-AVX512-NEXT: vxorps %xmm1, %xmm1, %xmm1
|
||||
; X64-AVX512-NEXT: vcmpneqps %ymm1, %ymm0, %k1
|
||||
; X64-AVX512-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to8}, %ymm0, %k1 {%k1}
|
||||
; X64-AVX512-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to8}, %ymm0, %k1 {%k1}
|
||||
; X64-AVX512-NEXT: vcmpltps {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to8}, %ymm0, %k1 {%k1}
|
||||
; X64-AVX512-NEXT: vcmpneqps {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to8}, %ymm0, %k2
|
||||
; X64-AVX512-NEXT: kxorw %k0, %k2, %k0
|
||||
; X64-AVX512-NEXT: kxorw %k1, %k0, %k0
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user