| ; RUN: llc < %s -mtriple=arm64-eabi | FileCheck %s |
| |
| define double @test_direct(float %in) { |
| ; CHECK-LABEL: test_direct: |
| %cmp = fcmp olt float %in, 0.000000e+00 |
| %val = select i1 %cmp, float 0.000000e+00, float %in |
| %longer = fpext float %val to double |
| ret double %longer |
| |
| ; CHECK: fcmp |
| ; CHECK: fcsel |
| } |
| |
| define double @test_cross(float %in) { |
| ; CHECK-LABEL: test_cross: |
| %cmp = fcmp ult float %in, 0.000000e+00 |
| %val = select i1 %cmp, float %in, float 0.000000e+00 |
| %longer = fpext float %val to double |
| ret double %longer |
| |
| ; CHECK: fcmp |
| ; CHECK: fcsel |
| } |
| |
| ; Same as previous, but with ordered comparison; |
| ; must become fminnm, not fmin. |
| define double @test_cross_fail_nan(float %in) { |
| ; CHECK-LABEL: test_cross_fail_nan: |
| %cmp = fcmp olt float %in, 0.000000e+00 |
| %val = select i1 %cmp, float %in, float 0.000000e+00 |
| %longer = fpext float %val to double |
| ret double %longer |
| |
| ; CHECK: fminnm s |
| } |
| |
| ; 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 |
| } |
| |
| ; Make sure the transformation isn't triggered for integers |
| define i64 @test_integer(i64 %in) { |
| %cmp = icmp slt i64 %in, 0 |
| %val = select i1 %cmp, i64 0, i64 %in |
| ret i64 %val |
| } |