1 ; RUN: llc -march=arm64 -enable-no-nans-fp-math < %s | FileCheck %s 2 3 define double @test_direct(float %in) #1 { 4 ; CHECK-LABEL: test_direct: 5 %cmp = fcmp olt float %in, 0.000000e+00 6 %longer = fpext float %in to double 7 %val = select i1 %cmp, double 0.000000e+00, double %longer 8 ret double %val 9 10 ; CHECK: fmax 11 } 12 13 define double @test_cross(float %in) #1 { 14 ; CHECK-LABEL: test_cross: 15 %cmp = fcmp olt float %in, 0.000000e+00 16 %longer = fpext float %in to double 17 %val = select i1 %cmp, double %longer, double 0.000000e+00 18 ret double %val 19 20 ; CHECK: fmin 21 } 22 23 ; This isn't a min or a max, but passes the first condition for swapping the 24 ; results. Make sure they're put back before we resort to the normal fcsel. 25 define float @test_cross_fail(float %lhs, float %rhs) { 26 ; CHECK-LABEL: test_cross_fail: 27 %tst = fcmp une float %lhs, %rhs 28 %res = select i1 %tst, float %rhs, float %lhs 29 ret float %res 30 31 ; The register allocator would have to decide to be deliberately obtuse before 32 ; other register were used. 33 ; CHECK: fcsel s0, s1, s0, ne 34 }
