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1; RUN: llc < %s | FileCheck %s --check-prefix=CHECK --check-prefix=SAFE
2; RUN: llc < %s -enable-unsafe-fp-math | FileCheck %s --check-prefix=CHECK --check-prefix=UNSAFE
3
4target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5target triple = "x86_64--"
6
7; CHECK-LABEL: double_rounding:
8; SAFE: callq __trunctfdf2
9; SAFE-NEXT: cvtsd2ss %xmm0
10; UNSAFE: callq __trunctfsf2
11; UNSAFE-NOT: cvt
12define void @double_rounding(fp128* %x, float* %f) {
13entry:
14  %0 = load fp128, fp128* %x, align 16
15  %1 = fptrunc fp128 %0 to double
16  %2 = fptrunc double %1 to float
17  store float %2, float* %f, align 4
18  ret void
19}
20
21; CHECK-LABEL: double_rounding_precise_first:
22; CHECK: fstps (%
23; CHECK-NOT: fstpl
24define void @double_rounding_precise_first(float* %f) {
25entry:
26  ; Hack, to generate a precise FP_ROUND to double
27  %precise = call double asm sideeffect "fld %st(0)", "={st(0)}"()
28  %0 = fptrunc double %precise to float
29  store float %0, float* %f, align 4
30  ret void
31}
32