| Owen Anderson | 3a9e769 | 2010-10-05 17:24:05 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -march=x86-64 | FileCheck %s |
| 2 | ; Verify that we are using the efficient uitofp --> sitofp lowering illustrated |
| 3 | ; by the compiler_rt implementation of __floatundisf. |
| 4 | ; <rdar://problem/8493982> |
| 5 | |
| 6 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| 7 | target triple = "x86_64-apple-darwin10.0.0" |
| 8 | |
| 9 | ; CHECK: testq %rdi, %rdi |
| 10 | ; CHECK-NEXT: jns LBB0_2 |
| 11 | ; CHECK: shrq |
| 12 | ; CHECK-NEXT: andq |
| 13 | ; CHECK-NEXT: orq |
| 14 | ; CHECK-NEXT: cvtsi2ss |
| 15 | ; CHECK: LBB0_2 |
| 16 | ; CHECK-NEXT: cvtsi2ss |
| 17 | define float @test(i64 %a) { |
| 18 | entry: |
| 19 | %b = uitofp i64 %a to float |
| 20 | ret float %b |
| 21 | } |