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; RUN: llc -march=arm64 -enable-no-nans-fp-math < %s | FileCheck %s
define double @test_direct(float %in) #1 {
; CHECK-LABEL: test_direct:
%cmp = fcmp olt float %in, 0.000000e+00
%longer = fpext float %in to double
%val = select i1 %cmp, double 0.000000e+00, double %longer
ret double %val
; CHECK: fmax
}
define double @test_cross(float %in) #1 {
; CHECK-LABEL: test_cross:
%cmp = fcmp olt float %in, 0.000000e+00
%longer = fpext float %in to double
%val = select i1 %cmp, double %longer, double 0.000000e+00
ret double %val
; CHECK: fmin
}
; This isn't a min or a max, but passes the first condition for swapping the
; results. Make sure they're put back before we resort to the normal fcsel.
define float @test_cross_fail(float %lhs, float %rhs) {
; CHECK-LABEL: test_cross_fail:
%tst = fcmp une float %lhs, %rhs
%res = select i1 %tst, float %rhs, float %lhs
ret float %res
; The register allocator would have to decide to be deliberately obtuse before
; other register were used.
; CHECK: fcsel s0, s1, s0, ne
}
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