54 lines
1.5 KiB
LLVM
54 lines
1.5 KiB
LLVM
|
; 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: fmax s
|
||
|
|
}
|
||
|
|
|
||
|
|
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: fmin s
|
||
|
|
}
|
||
|
|
|
||
|
|
; 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
|
||
|
|
}
|