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
4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64--"
7 ; CHECK-LABEL: double_rounding:
8 ; SAFE: callq __trunctfdf2
9 ; SAFE-NEXT: cvtsd2ss %xmm0
10 ; UNSAFE: callq __trunctfsf2
12 define void @double_rounding(fp128* %x, float* %f) {
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
21 ; CHECK-LABEL: double_rounding_precise_first:
24 define void @double_rounding_precise_first(float* %f) {
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