1 files changed, 69 insertions, 0 deletions
diff --git a/test/CodeGen/X86/half.ll b/test/CodeGen/X86/half.ll
new file mode 100644
index 000000000000..1dcf93939b8b
--- /dev/null
+++ b/test/CodeGen/X86/half.ll
@@ -0,0 +1,69 @@
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -mattr=-f16c | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-LIBCALL
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -mattr=+f16c | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-F16C
+
+define void @test_load_store(half* %in, half* %out) {
+; CHECK-LABEL: test_load_store:
+; CHECK: movw (%rdi), [[TMP:%[a-z0-9]+]]
+; CHECK: movw [[TMP]], (%rsi)
+  %val = load half* %in
+  store half %val, half* %out
+  ret void
+}
+
+define i16 @test_bitcast_from_half(half* %addr) {
+; CHECK-LABEL: test_bitcast_from_half:
+; CHECK: movzwl (%rdi), %eax
+  %val = load half* %addr
+  %val_int = bitcast half %val to i16
+  ret i16 %val_int
+}
+
+define void @test_bitcast_to_half(half* %addr, i16 %in) {
+; CHECK-LABEL: test_bitcast_to_half:
+; CHECK: movw %si, (%rdi)
+  %val_fp = bitcast i16 %in to half
+  store half %val_fp, half* %addr
+  ret void
+}
+
+define float @test_extend32(half* %addr) {
+; CHECK-LABEL: test_extend32:
+
+; CHECK-LIBCALL: jmp __gnu_h2f_ieee
+; CHECK-FP16: vcvtph2ps
+  %val16 = load half* %addr
+  %val32 = fpext half %val16 to float
+  ret float %val32
+}
+
+define double @test_extend64(half* %addr) {
+; CHECK-LABEL: test_extend64:
+
+; CHECK-LIBCALL: callq __gnu_h2f_ieee
+; CHECK-LIBCALL: cvtss2sd
+; CHECK-FP16: vcvtph2ps
+; CHECK-FP16: vcvtss2sd
+  %val16 = load half* %addr
+  %val32 = fpext half %val16 to double
+  ret double %val32
+}
+
+define void @test_trunc32(float %in, half* %addr) {
+; CHECK-LABEL: test_trunc32:
+
+; CHECK-LIBCALL: callq __gnu_f2h_ieee
+; CHECK-FP16: vcvtps2ph
+  %val16 = fptrunc float %in to half
+  store half %val16, half* %addr
+  ret void
+}
+
+define void @test_trunc64(double %in, half* %addr) {
+; CHECK-LABEL: test_trunc64:
+
+; CHECK-LIBCALL: callq __truncdfhf2
+; CHECK-FP16: callq __truncdfhf2
+  %val16 = fptrunc double %in to half
+  store half %val16, half* %addr
+  ret void
+}