1 ; RUN: llc -march=arm64 -enable-no-nans-fp-math < %s | FileCheck %s
2 ; RUN: llc -march=arm64 < %s | FileCheck %s --check-prefix=CHECK-SAFE
4 define double @test_direct(float %in) {
5 ; CHECK-LABEL: test_direct:
6 ; CHECK-SAFE-LABEL: test_direct:
7 %cmp = fcmp olt float %in, 0.000000e+00
8 %longer = fpext float %in to double
9 %val = select i1 %cmp, double 0.000000e+00, double %longer
16 define double @test_cross(float %in) {
17 ; CHECK-LABEL: test_cross:
18 ; CHECK-SAFE-LABEL: test_cross:
19 %cmp = fcmp ult float %in, 0.000000e+00
20 %longer = fpext float %in to double
21 %val = select i1 %cmp, double %longer, double 0.000000e+00
28 ; Same as previous, but with ordered comparison;
29 ; can't be converted in safe-math mode.
30 define double @test_cross_fail_nan(float %in) {
31 ; CHECK-LABEL: test_cross_fail_nan:
32 ; CHECK-SAFE-LABEL: test_cross_fail_nan:
33 %cmp = fcmp olt float %in, 0.000000e+00
34 %longer = fpext float %in to double
35 %val = select i1 %cmp, double %longer, double 0.000000e+00
39 ; CHECK-SAFE: fcsel d0, d1, d0, mi
42 ; This isn't a min or a max, but passes the first condition for swapping the
43 ; results. Make sure they're put back before we resort to the normal fcsel.
44 define float @test_cross_fail(float %lhs, float %rhs) {
45 ; CHECK-LABEL: test_cross_fail:
46 ; CHECK-SAFE-LABEL: test_cross_fail:
47 %tst = fcmp une float %lhs, %rhs
48 %res = select i1 %tst, float %rhs, float %lhs
51 ; The register allocator would have to decide to be deliberately obtuse before
52 ; other register were used.
53 ; CHECK: fcsel s0, s1, s0, ne
54 ; CHECK-SAFE: fcsel s0, s1, s0, ne
57 ; Make sure the transformation isn't triggered for integers
58 define i64 @test_integer(i64 %in) {
59 %cmp = icmp slt i64 %in, 0
60 %val = select i1 %cmp, i64 0, i64 %in