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