1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/fpconv-vector-op-scalarize.ll b/test/CodeGen/AArch64/fpconv-vector-op-scalarize.ll
new file mode 100644
index 0000000..56e0b4a
--- /dev/null
+++ b/test/CodeGen/AArch64/fpconv-vector-op-scalarize.ll
@@ -0,0 +1,44 @@
+; RUN: llc < %s -mtriple=arm64-apple-darwin | FileCheck %s
+
+; PR20778
+; Check that the legalizer doesn't crash when scalarizing FP conversion
+; instructions' operands.  The operands are all illegal on AArch64,
+; ensuring they are legalized.  The results are all legal.
+
+define <1 x double> @test_sitofp(<1 x i1> %in) {
+; CHECK-LABEL: test_sitofp:
+; CHECK:       sbfx  [[GPR:w[0-9]+]], w0, #0, #1
+; CHECK-NEXT:  scvtf d0, [[GPR]]
+; CHECK-NEXT:  ret
+entry:
+  %0 = sitofp <1 x i1> %in to <1 x double>
+  ret <1 x double> %0
+}
+
+define <1 x double> @test_uitofp(<1 x i1> %in) {
+; CHECK-LABEL: test_uitofp:
+; CHECK:       and   [[GPR:w[0-9]+]], w0, #0x1
+; CHECK-NEXT:  ucvtf d0, [[GPR]]
+; CHECK-NEXT:  ret
+entry:
+  %0 = uitofp <1 x i1> %in to <1 x double>
+  ret <1 x double> %0
+}
+
+define <1 x i64> @test_fptosi(<1 x fp128> %in) {
+; CHECK-LABEL: test_fptosi:
+; CHECK:       bl    ___fixtfdi
+; CHECK-NEXT:  fmov  d0, x0
+entry:
+  %0 = fptosi <1 x fp128> %in to <1 x i64>
+  ret <1 x i64> %0
+}
+
+define <1 x i64> @test_fptoui(<1 x fp128> %in) {
+; CHECK-LABEL: test_fptoui:
+; CHECK:       bl    ___fixunstfdi
+; CHECK-NEXT:  fmov  d0, x0
+entry:
+  %0 = fptoui <1 x fp128> %in to <1 x i64>
+  ret <1 x i64> %0
+}