llvm/test/CodeGen/AArch64/arm64-fmax-safe.ll
Simon Pilgrim e927841848 [AARCH64] Enable AARCH64 lit tests on windows dev machines
As discussed on PR27654, this patch fixes the triples of a lot of aarch64 tests and enables lit tests on windows

This will hopefully help stop cases where windows developers break the aarch64 target

Differential Revision: https://reviews.llvm.org/D22191

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275973 91177308-0d34-0410-b5e6-96231b3b80d8
2016-07-19 13:35:11 +00:00

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
}