87 lines
2.7 KiB
LLVM
87 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=arm64-eabi -enable-no-nans-fp-math | FileCheck %s
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define double @test_direct(float %in) {
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; CHECK-LABEL: test_direct:
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; CHECK: // %bb.0:
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; CHECK-NEXT: movi d1, #0000000000000000
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; CHECK-NEXT: fmaxnm s0, s0, s1
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; CHECK-NEXT: fcvt d0, s0
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; CHECK-NEXT: ret
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%cmp = fcmp nnan olt float %in, 0.000000e+00
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%val = select i1 %cmp, float 0.000000e+00, float %in
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%longer = fpext float %val to double
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ret double %longer
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}
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define double @test_cross(float %in) {
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; CHECK-LABEL: test_cross:
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; CHECK: // %bb.0:
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; CHECK-NEXT: movi d1, #0000000000000000
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; CHECK-NEXT: fminnm s0, s0, s1
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; CHECK-NEXT: fcvt d0, s0
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; CHECK-NEXT: ret
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%cmp = fcmp nnan ult float %in, 0.000000e+00
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%val = select i1 %cmp, float %in, float 0.000000e+00
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%longer = fpext float %val to double
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ret double %longer
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}
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; Same as previous, but with ordered comparison;
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; can't be converted in safe-math mode.
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define double @test_cross_fail_nan(float %in) {
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; CHECK-LABEL: test_cross_fail_nan:
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; CHECK: // %bb.0:
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; CHECK-NEXT: movi d1, #0000000000000000
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; CHECK-NEXT: fminnm s0, s0, s1
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; CHECK-NEXT: fcvt d0, s0
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; CHECK-NEXT: ret
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%cmp = fcmp nnan olt float %in, 0.000000e+00
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%val = select i1 %cmp, float %in, float 0.000000e+00
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%longer = fpext float %val to double
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ret double %longer
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}
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; This isn't a min or a max, but passes the first condition for swapping the
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; results. Make sure they're put back before we resort to the normal fcsel.
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define float @test_cross_fail(float %lhs, float %rhs) {
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; CHECK-LABEL: test_cross_fail:
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; CHECK: // %bb.0:
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; CHECK-NEXT: fcmp s0, s1
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; CHECK-NEXT: fcsel s0, s1, s0, ne
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; CHECK-NEXT: ret
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%tst = fcmp nnan une float %lhs, %rhs
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%res = select i1 %tst, float %rhs, float %lhs
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ret float %res
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}
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; Make sure the transformation isn't triggered for integers
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define i64 @test_integer(i64 %in) {
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; CHECK-LABEL: test_integer:
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; CHECK: // %bb.0:
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; CHECK-NEXT: cmp x0, #0
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; CHECK-NEXT: csel x0, xzr, x0, lt
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; CHECK-NEXT: ret
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%cmp = icmp slt i64 %in, 0
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%val = select i1 %cmp, i64 0, i64 %in
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ret i64 %val
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}
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; FIXME: It'd be nice for this to create an fmin instruction!
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define float @test_f16(half %in) {
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; CHECK-LABEL: test_f16:
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; CHECK: // %bb.0:
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; CHECK-NEXT: // kill: def $h0 killed $h0 def $s0
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; CHECK-NEXT: fcvt s1, h0
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; CHECK-NEXT: adrp x8, .LCPI5_0
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; CHECK-NEXT: ldr h2, [x8, :lo12:.LCPI5_0]
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; CHECK-NEXT: fcmp s1, #0.0
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; CHECK-NEXT: fcsel s0, s0, s2, lt
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; CHECK-NEXT: fcvt s0, h0
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; CHECK-NEXT: ret
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%cmp = fcmp nnan ult half %in, 0.000000e+00
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%val = select i1 %cmp, half %in, half 0.000000e+00
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%longer = fpext half %val to float
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ret float %longer
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}
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