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@zhaoqi5 zhaoqi5 commented Oct 30, 2025

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llvmbot commented Oct 30, 2025

@llvm/pr-subscribers-backend-loongarch

Author: ZhaoQi (zhaoqi5)

Changes

Full diff: https://github.com/llvm/llvm-project/pull/165665.diff

1 Files Affected:

  • (added) llvm/test/CodeGen/LoongArch/lsx/shufflevector-halves-quarters.ll (+173)
diff --git a/llvm/test/CodeGen/LoongArch/lsx/shufflevector-halves-quarters.ll b/llvm/test/CodeGen/LoongArch/lsx/shufflevector-halves-quarters.ll
new file mode 100644
index 0000000000000..2a0a107a2b76e
--- /dev/null
+++ b/llvm/test/CodeGen/LoongArch/lsx/shufflevector-halves-quarters.ll
@@ -0,0 +1,173 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: llc --mtriple=loongarch32 --mattr=+32s,+lsx < %s | FileCheck %s
+; RUN: llc --mtriple=loongarch64 --mattr=+lsx < %s | FileCheck %s
+
+define void @shufflevector_halves_b(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_b:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI0_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI0_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 0, i32 8, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_halves_b_1(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_b_1:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI1_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI1_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 3, i32 11, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_halves_b_2(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_b_2:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI2_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI2_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 5, i32 13, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_halves_b_3(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_b_3:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI3_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI3_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 6, i32 14, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_halves_h(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_h:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI4_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI4_0)
+; CHECK-NEXT:    vshuf.h $vr1, $vr0, $vr0
+; CHECK-NEXT:    vst $vr1, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <8 x i16>, ptr %a
+  %vb = load <8 x i16>, ptr %b
+  %c = shufflevector <8 x i16> %va, <8 x i16> poison, <8 x i32> <i32 0, i32 4, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8>
+  store <8 x i16> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_halves_h_1(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_halves_h_1:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI5_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI5_0)
+; CHECK-NEXT:    vshuf.h $vr1, $vr0, $vr0
+; CHECK-NEXT:    vst $vr1, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <8 x i16>, ptr %a
+  %vb = load <8 x i16>, ptr %b
+  %c = shufflevector <8 x i16> %va, <8 x i16> poison, <8 x i32> <i32 3, i32 7, i32 8, i32 8, i32 8, i32 8, i32 8, i32 8>
+  store <8 x i16> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_quarters_b(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_quarters_b:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI6_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI6_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 0, i32 4, i32 8, i32 12, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_quarters_b_1(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_quarters_b_1:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI7_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI7_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 1, i32 5, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_quarters_b_2(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_quarters_b_2:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI8_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI8_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 16, i32 6, i32 10, i32 14, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}
+
+define void @shufflevector_quarters_b_3(ptr %res, ptr %a, ptr %b) nounwind {
+; CHECK-LABEL: shufflevector_quarters_b_3:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vld $vr0, $a1, 0
+; CHECK-NEXT:    pcalau12i $a1, %pc_hi20(.LCPI9_0)
+; CHECK-NEXT:    vld $vr1, $a1, %pc_lo12(.LCPI9_0)
+; CHECK-NEXT:    vshuf.b $vr0, $vr0, $vr0, $vr1
+; CHECK-NEXT:    vst $vr0, $a0, 0
+; CHECK-NEXT:    ret
+entry:
+  %va = load <16 x i8>, ptr %a
+  %vb = load <16 x i8>, ptr %b
+  %c = shufflevector <16 x i8> %va, <16 x i8> poison, <16 x i32> <i32 3, i32 7, i32 11, i32 15, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
+  store <16 x i8> %c, ptr %res
+  ret void
+}

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