1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s
4 ; Test against PR36600: https://bugs.llvm.org/show_bug.cgi?id=36600
5 ; This is not fabs. If X = -0.0, it should return -0.0 not 0.0.
7 define double @not_fabs(double %x) #0 {
8 ; CHECK-LABEL: not_fabs:
10 ; CHECK-NEXT: fneg d1, d0
11 ; CHECK-NEXT: fcmp d0, #0.0
12 ; CHECK-NEXT: fcsel d0, d1, d0, le
14 %cmp = fcmp nnan ole double %x, 0.0
15 %sub = fsub nnan double -0.0, %x
16 %cond = select i1 %cmp, double %sub, double %x
20 ; Try again with different type, predicate, and compare constant.
22 define float @still_not_fabs(float %x) #0 {
23 ; CHECK-LABEL: still_not_fabs:
25 ; CHECK-NEXT: adrp x8, .LCPI1_0
26 ; CHECK-NEXT: ldr s1, [x8, :lo12:.LCPI1_0]
27 ; CHECK-NEXT: fneg s2, s0
28 ; CHECK-NEXT: fcmp s0, s1
29 ; CHECK-NEXT: fcsel s0, s0, s2, ge
31 %cmp = fcmp nnan oge float %x, -0.0
32 %sub = fsub nnan float -0.0, %x
33 %cond = select i1 %cmp, float %x, float %sub
37 attributes #0 = { "no-nans-fp-math"="true" }