From 5a5ac124e1efaf208671f01c46edb15f29ed2a0b Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Wed, 27 May 2015 18:44:32 +0000
Subject: Vendor import of llvm trunk r238337:
 https://llvm.org/svn/llvm-project/llvm/trunk@238337

---
 .../CodeGen/X86/fast-isel-float-half-convertion.ll | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 test/CodeGen/X86/fast-isel-float-half-convertion.ll

(limited to 'test/CodeGen/X86/fast-isel-float-half-convertion.ll')

diff --git a/test/CodeGen/X86/fast-isel-float-half-convertion.ll b/test/CodeGen/X86/fast-isel-float-half-convertion.ll
new file mode 100644
index 000000000000..707a325bf41d
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-float-half-convertion.ll
@@ -0,0 +1,28 @@
+; RUN: llc -fast-isel -fast-isel-abort=1 -asm-verbose=false -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s | FileCheck %s
+
+; Verify that fast-isel correctly expands float-half conversions.
+
+define i16 @test_fp32_to_fp16(float %a) {
+; CHECK-LABEL: test_fp32_to_fp16:
+; CHECK: vcvtps2ph $0, %xmm0, %xmm0
+; CHECK-NEXT: vmovd %xmm0, %eax
+; CHECK-NEXT: retq
+entry:
+  %0 = call i16 @llvm.convert.to.fp16.f32(float %a)
+  ret i16 %0
+}
+
+define float @test_fp16_to_fp32(i32 %a) {
+; CHECK-LABEL: test_fp16_to_fp32:
+; CHECK: movswl %di, %eax
+; CHECK-NEXT: vmovd %eax, %xmm0
+; CHECK-NEXT: vcvtph2ps %xmm0, %xmm0
+; CHECK-NEXT: retq
+entry:
+  %0 = trunc i32 %a to i16
+  %1 = call float @llvm.convert.from.fp16.f32(i16 %0)
+  ret float %1
+}
+
+declare i16 @llvm.convert.to.fp16.f32(float)
+declare float @llvm.convert.from.fp16.f32(i16)
-- 
cgit v1.3