[PowerPC][NFC] Add virtual call to show redundant spill of vector registers

Reviewed By: lkail

Differential Revision: https://reviews.llvm.org/D133921

Author: Ting Wang

llvm/test/CodeGen/PowerPC/aix64-virtual-call-no-spills.ll

@@ -0,0 +1,90 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -O0 -mtriple=powerpc64-ibm-aix-xcoff -mcpu=pwr10  < %s | \
+; RUN: FileCheck --check-prefix=CHECK %s
+; RUN: llc -O0 -mtriple=powerpc64-ibm-aix-xcoff -mcpu=pwr10 -vec-extabi < %s | \
+; RUN: FileCheck --check-prefix=CHECK-VEXT %s
+
+define dso_local noundef signext i32 @virtualCall(ptr noundef %b) #0 {
+; CHECK-LABEL: virtualCall:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    mflr 0
+; CHECK-NEXT:    std 0, 16(1)
+; CHECK-NEXT:    stdu 1, -320(1)
+; CHECK-NEXT:    stxv 52, 128(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 53, 144(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 54, 160(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 55, 176(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 56, 192(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 57, 208(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 58, 224(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 59, 240(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 60, 256(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 61, 272(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 62, 288(1) # 16-byte Folded Spill
+; CHECK-NEXT:    stxv 63, 304(1) # 16-byte Folded Spill
+; CHECK-NEXT:    std 3, 120(1)
+; CHECK-NEXT:    ld 3, 120(1)
+; CHECK-NEXT:    ld 4, 0(3)
+; CHECK-NEXT:    ld 4, 0(4)
+; CHECK-NEXT:    mr 5, 2
+; CHECK-NEXT:    std 5, 40(1)
+; CHECK-NEXT:    ld 5, 8(4)
+; CHECK-NEXT:    ld 11, 16(4)
+; CHECK-NEXT:    ld 4, 0(4)
+; CHECK-NEXT:    mr 2, 5
+; CHECK-NEXT:    mtctr 4
+; CHECK-NEXT:    bctrl
+; CHECK-NEXT:    ld 2, 40(1)
+; CHECK-NEXT:    # kill: def $r3 killed $r3 killed $x3
+; CHECK-NEXT:    extsw 3, 3
+; CHECK-NEXT:    lxv 63, 304(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 62, 288(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 61, 272(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 60, 256(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 59, 240(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 58, 224(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 57, 208(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 56, 192(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 55, 176(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 54, 160(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 53, 144(1) # 16-byte Folded Reload
+; CHECK-NEXT:    lxv 52, 128(1) # 16-byte Folded Reload
+; CHECK-NEXT:    addi 1, 1, 320
+; CHECK-NEXT:    ld 0, 16(1)
+; CHECK-NEXT:    mtlr 0
+; CHECK-NEXT:    blr
+;
+; CHECK-VEXT-LABEL: virtualCall:
+; CHECK-VEXT:       # %bb.0: # %entry
+; CHECK-VEXT-NEXT:    mflr 0
+; CHECK-VEXT-NEXT:    std 0, 16(1)
+; CHECK-VEXT-NEXT:    stdu 1, -128(1)
+; CHECK-VEXT-NEXT:    std 3, 120(1)
+; CHECK-VEXT-NEXT:    ld 3, 120(1)
+; CHECK-VEXT-NEXT:    ld 4, 0(3)
+; CHECK-VEXT-NEXT:    ld 4, 0(4)
+; CHECK-VEXT-NEXT:    mr 5, 2
+; CHECK-VEXT-NEXT:    std 5, 40(1)
+; CHECK-VEXT-NEXT:    ld 5, 8(4)
+; CHECK-VEXT-NEXT:    ld 11, 16(4)
+; CHECK-VEXT-NEXT:    ld 4, 0(4)
+; CHECK-VEXT-NEXT:    mr 2, 5
+; CHECK-VEXT-NEXT:    mtctr 4
+; CHECK-VEXT-NEXT:    bctrl
+; CHECK-VEXT-NEXT:    ld 2, 40(1)
+; CHECK-VEXT-NEXT:    # kill: def $r3 killed $r3 killed $x3
+; CHECK-VEXT-NEXT:    extsw 3, 3
+; CHECK-VEXT-NEXT:    addi 1, 1, 128
+; CHECK-VEXT-NEXT:    ld 0, 16(1)
+; CHECK-VEXT-NEXT:    mtlr 0
+; CHECK-VEXT-NEXT:    blr
+entry:
+  %b.addr = alloca ptr, align 8
+  store ptr %b, ptr %b.addr, align 8
+  %0 = load ptr, ptr %b.addr, align 8
+  %vtable = load ptr, ptr %0, align 8
+  %vfn = getelementptr inbounds ptr, ptr %vtable, i64 0
+  %1 = load ptr, ptr %vfn, align 8
+  %call = call noundef signext i32 %1(ptr noundef nonnull align 8 dereferenceable(8) %0)
+  ret i32 %call
+}