[llvm] [LoongArch] Pre-commit test for loop term fold pass & vector sext, zext (PR #131742)

[Lu Weining via llvm-commits]

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@@ -0,0 +1,276 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --mtriple=loongarch64 --mattr=+d,+lsx < %s | FileCheck %s
+
+define void @shuffle_sign_ext_2i8_to_2i64(ptr %ptr, ptr %dst) {
+; CHECK-LABEL: shuffle_sign_ext_2i8_to_2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ld.h $a0, $a0, 0
+; CHECK-NEXT:    pcalau12i $a2, %pc_hi20(.LCPI0_0)
+; CHECK-NEXT:    vld $vr0, $a2, %pc_lo12(.LCPI0_0)
+; CHECK-NEXT:    vinsgr2vr.h $vr1, $a0, 0
+; CHECK-NEXT:    vrepli.b $vr2, 0
+; CHECK-NEXT:    vshuf.b $vr0, $vr1, $vr2, $vr0
+; CHECK-NEXT:    vst $vr0, $a1, 0
+; CHECK-NEXT:    ret
+  %x = load <2 x i8>, ptr %ptr
+  %y  = shufflevector <2 x i8> %x, <2 x i8> zeroinitializer, <16 x i32> <i32 0, i32 3, i32 3, i32 3, i32 3, i32 3, i32 3, i32 3, i32 1, i32 2, i32 2, i32 2,i32 2, i32 2, i32 2, i32 2>
+  %r = bitcast <16 x i8> %y to <2 x i64>
+  store <2 x i64> %r, ptr %dst
+  ret void
+}
+
+define void @shuffle_sign_ext_2i16_to_2i64(ptr %ptr, ptr %dst) {
+; CHECK-LABEL: shuffle_sign_ext_2i16_to_2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ld.w $a0, $a0, 0
+; CHECK-NEXT:    pcalau12i $a2, %pc_hi20(.LCPI1_0)
+; CHECK-NEXT:    vld $vr0, $a2, %pc_lo12(.LCPI1_0)
+; CHECK-NEXT:    vinsgr2vr.w $vr1, $a0, 0
+; CHECK-NEXT:    vrepli.b $vr2, 0
+; CHECK-NEXT:    vshuf.h $vr0, $vr1, $vr2
+; CHECK-NEXT:    vst $vr0, $a1, 0
+; CHECK-NEXT:    ret
+  %x = load <2 x i16>, ptr %ptr
+  %y  = shufflevector <2 x i16> %x, <2 x i16> zeroinitializer, <8 x i32> <i32 0, i32 3, i32 3, i32 3, i32 1, i32 2, i32 2, i32 2>
+  %r = bitcast <8 x i16> %y to <2 x i64>
+  store <2 x i64> %r, ptr %dst
+  ret void
+}
+
+define void @shuffle_sign_ext_2i32_to_2i64(ptr %ptr, ptr %dst) {
+; CHECK-LABEL: shuffle_sign_ext_2i32_to_2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ld.d $a0, $a0, 0
+; CHECK-NEXT:    pcalau12i $a2, %pc_hi20(.LCPI2_0)
+; CHECK-NEXT:    vld $vr0, $a2, %pc_lo12(.LCPI2_0)
+; CHECK-NEXT:    vinsgr2vr.d $vr1, $a0, 0
+; CHECK-NEXT:    vrepli.b $vr2, 0
+; CHECK-NEXT:    vshuf.w $vr0, $vr1, $vr2
+; CHECK-NEXT:    vst $vr0, $a1, 0
+; CHECK-NEXT:    ret
+  %x = load <2 x i32>, ptr %ptr
+  %y  = shufflevector <2 x i32> %x, <2 x i32> zeroinitializer, <4 x i32> <i32 0, i32 3, i32 1, i32 2>
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SixWeining wrote:

These is one extra space before `=`.

https://github.com/llvm/llvm-project/pull/131742