| Mehdi Amini | 945a660 | 2015-02-27 18:32:11 +0000 | [diff] [blame] | 1 | ; RUN: llc -fast-isel -fast-isel-abort=1 -asm-verbose=false -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s | FileCheck %s |
| Andrea Di Biagio | 7035178 | 2015-02-20 19:37:14 +0000 | [diff] [blame] | 2 | |
| 3 | ; Verify that fast-isel correctly expands float-half conversions. |
| 4 | |
| 5 | define i16 @test_fp32_to_fp16(float %a) { |
| 6 | ; CHECK-LABEL: test_fp32_to_fp16: |
| Ahmed Bougacha | 68a8efa | 2016-02-02 01:44:03 +0000 | [diff] [blame] | 7 | ; CHECK: vcvtps2ph $4, %xmm0, %xmm0 |
| Andrea Di Biagio | 7035178 | 2015-02-20 19:37:14 +0000 | [diff] [blame] | 8 | ; CHECK-NEXT: vmovd %xmm0, %eax |
| 9 | ; CHECK-NEXT: retq |
| 10 | entry: |
| 11 | %0 = call i16 @llvm.convert.to.fp16.f32(float %a) |
| 12 | ret i16 %0 |
| 13 | } |
| 14 | |
| 15 | define float @test_fp16_to_fp32(i32 %a) { |
| 16 | ; CHECK-LABEL: test_fp16_to_fp32: |
| 17 | ; CHECK: movswl %di, %eax |
| 18 | ; CHECK-NEXT: vmovd %eax, %xmm0 |
| 19 | ; CHECK-NEXT: vcvtph2ps %xmm0, %xmm0 |
| 20 | ; CHECK-NEXT: retq |
| 21 | entry: |
| 22 | %0 = trunc i32 %a to i16 |
| 23 | %1 = call float @llvm.convert.from.fp16.f32(i16 %0) |
| 24 | ret float %1 |
| 25 | } |
| 26 | |
| 27 | declare i16 @llvm.convert.to.fp16.f32(float) |
| 28 | declare float @llvm.convert.from.fp16.f32(i16) |