File llvm-armv7-fix-vector-compare-with-zero-lowerin... of Package llvm15

Overview Repositories Revisions Requests Users Attributes Meta

File llvm-armv7-fix-vector-compare-with-zero-lowering.patch of Package llvm15 (Revision e3cbc05183f57aced8835cfbaed82ba0)

Currently displaying revision e3cbc05183f57aced8835cfbaed82ba0 , Show latest

Index: llvm/lib/Target/ARM/ARMISelLowering.cpp
===================================================================
--- llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -6833,25 +6833,25 @@
 
   // If one of the operands is a constant vector zero, attempt to fold the
   // comparison to a specialized compare-against-zero form.
-  SDValue SingleOp;
-  if (ISD::isBuildVectorAllZeros(Op1.getNode()))
-    SingleOp = Op0;
-  else if (ISD::isBuildVectorAllZeros(Op0.getNode())) {
+  if (ISD::isBuildVectorAllZeros(Op0.getNode()) &&
+      (Opc == ARMCC::GE || Opc == ARMCC::GT || Opc == ARMCC::EQ ||
+       Opc == ARMCC::NE)) {
     if (Opc == ARMCC::GE)
       Opc = ARMCC::LE;
     else if (Opc == ARMCC::GT)
       Opc = ARMCC::LT;
-    SingleOp = Op1;
+    std::swap(Op0, Op1);
   }
 
   SDValue Result;
-  if (SingleOp.getNode()) {
-    Result = DAG.getNode(ARMISD::VCMPZ, dl, CmpVT, SingleOp,
+  if (ISD::isBuildVectorAllZeros(Op1.getNode()) &&
+      (Opc == ARMCC::GE || Opc == ARMCC::GT || Opc == ARMCC::LE ||
+       Opc == ARMCC::LT || Opc == ARMCC::NE || Opc == ARMCC::EQ))
+    Result = DAG.getNode(ARMISD::VCMPZ, dl, CmpVT, Op0,
                          DAG.getConstant(Opc, dl, MVT::i32));
-  } else {
+  else
     Result = DAG.getNode(ARMISD::VCMP, dl, CmpVT, Op0, Op1,
                          DAG.getConstant(Opc, dl, MVT::i32));
-  }
 
   Result = DAG.getSExtOrTrunc(Result, dl, VT);
 
Index: llvm/test/CodeGen/Thumb2/mve-pred-and.ll
===================================================================
--- llvm/test/CodeGen/Thumb2/mve-pred-and.ll
+++ llvm/test/CodeGen/Thumb2/mve-pred-and.ll
@@ -122,8 +122,9 @@
 define arm_aapcs_vfpcc <4 x i32> @cmpulez_v4i1(<4 x i32> %a, <4 x i32> %b) {
 ; CHECK-LABEL: cmpulez_v4i1:
 ; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vmov.i32 q2, #0x0
 ; CHECK-NEXT:    vpt.i32 eq, q0, zr
-; CHECK-NEXT:    vcmpt.u32 cs, q1, zr
+; CHECK-NEXT:    vcmpt.u32 cs, q2, q1
 ; CHECK-NEXT:    vpsel q0, q0, q1
 ; CHECK-NEXT:    bx lr
 entry:
Index: llvm/test/CodeGen/Thumb2/mve-pred-or.ll
===================================================================
--- llvm/test/CodeGen/Thumb2/mve-pred-or.ll
+++ llvm/test/CodeGen/Thumb2/mve-pred-or.ll
@@ -123,7 +123,8 @@
 define arm_aapcs_vfpcc <4 x i32> @cmpulez_v4i1(<4 x i32> %a, <4 x i32> %b) {
 ; CHECK-LABEL: cmpulez_v4i1:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u32 cs, q1, zr
+; CHECK-NEXT:    vmov.i32 q2, #0x0
+; CHECK-NEXT:    vcmp.u32 cs, q2, q1
 ; CHECK-NEXT:    vpnot
 ; CHECK-NEXT:    vpst
 ; CHECK-NEXT:    vcmpt.i32 ne, q0, zr
Index: llvm/test/CodeGen/Thumb2/mve-pred-xor.ll
===================================================================
--- llvm/test/CodeGen/Thumb2/mve-pred-xor.ll
+++ llvm/test/CodeGen/Thumb2/mve-pred-xor.ll
@@ -151,7 +151,8 @@
 define arm_aapcs_vfpcc <4 x i32> @cmpulez_v4i1(<4 x i32> %a, <4 x i32> %b) {
 ; CHECK-LABEL: cmpulez_v4i1:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u32 cs, q1, zr
+; CHECK-NEXT:    vmov.i32 q2, #0x0
+; CHECK-NEXT:    vcmp.u32 cs, q2, q1
 ; CHECK-NEXT:    vmrs r0, p0
 ; CHECK-NEXT:    vcmp.i32 eq, q0, zr
 ; CHECK-NEXT:    vmrs r1, p0
Index: llvm/test/CodeGen/Thumb2/mve-vcmpz.ll
===================================================================
--- llvm/test/CodeGen/Thumb2/mve-vcmpz.ll
+++ llvm/test/CodeGen/Thumb2/mve-vcmpz.ll
@@ -110,7 +110,8 @@
 define arm_aapcs_vfpcc <4 x i32> @vcmp_ulez_v4i32(<4 x i32> %src, <4 x i32> %a, <4 x i32> %b) {
 ; CHECK-LABEL: vcmp_ulez_v4i32:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u32 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u32 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:
@@ -229,7 +230,8 @@
 define arm_aapcs_vfpcc <8 x i16> @vcmp_ulez_v8i16(<8 x i16> %src, <8 x i16> %a, <8 x i16> %b) {
 ; CHECK-LABEL: vcmp_ulez_v8i16:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u16 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u16 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:
@@ -348,7 +350,8 @@
 define arm_aapcs_vfpcc <16 x i8> @vcmp_ulez_v16i8(<16 x i8> %src, <16 x i8> %a, <16 x i8> %b) {
 ; CHECK-LABEL: vcmp_ulez_v16i8:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u8 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u8 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:
@@ -489,7 +492,8 @@
 define arm_aapcs_vfpcc <4 x i32> @vcmp_r_ugez_v4i32(<4 x i32> %src, <4 x i32> %a, <4 x i32> %b) {
 ; CHECK-LABEL: vcmp_r_ugez_v4i32:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u32 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u32 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:
@@ -608,7 +612,8 @@
 define arm_aapcs_vfpcc <8 x i16> @vcmp_r_ugez_v8i16(<8 x i16> %src, <8 x i16> %a, <8 x i16> %b) {
 ; CHECK-LABEL: vcmp_r_ugez_v8i16:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u16 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u16 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:
@@ -727,7 +732,8 @@
 define arm_aapcs_vfpcc <16 x i8> @vcmp_r_ugez_v16i8(<16 x i8> %src, <16 x i8> %a, <16 x i8> %b) {
 ; CHECK-LABEL: vcmp_r_ugez_v16i8:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vcmp.u8 cs, q0, zr
+; CHECK-NEXT:    vmov.i32 q3, #0x0
+; CHECK-NEXT:    vcmp.u8 cs, q3, q0
 ; CHECK-NEXT:    vpsel q0, q1, q2
 ; CHECK-NEXT:    bx lr
 entry:

Places

File llvm-armv7-fix-vector-compare-with-zero-lowering.patch of Package llvm15 (Revision e3cbc05183f57aced8835cfbaed82ba0)

Places