780054d3ff
It is used to mark a value that we are sure that it is not some fcType. The examples include: * An arguments of a function is marked with nofpclass * Output value of an intrinsic can be sure to not be some type So that the following operation can make some assumptions.
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mtriple=armv8-unknown-none-eabi < %s | FileCheck %s --check-prefixes=CHECK,HARD
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; RUN: llc -mtriple=armv8-unknown-none-eabi -mattr=+soft-float < %s | FileCheck %s --check-prefixes=CHECK,SOFT
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define nofpclass(nan inf) half @f1(half returned nofpclass(nan inf) %x) {
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; CHECK-LABEL: f1:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: bx lr
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entry:
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ret half %x
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}
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define noundef half @f2(half nofpclass(nan) %a) {
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; HARD-LABEL: f2:
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; HARD: @ %bb.0: @ %entry
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; HARD-NEXT: vmov.f32 s0, #1.000000e+00
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; HARD-NEXT: vmov s2, r0
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; HARD-NEXT: vcvtb.f32.f16 s2, s2
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; HARD-NEXT: vadd.f32 s0, s2, s0
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; HARD-NEXT: vcvtb.f16.f32 s0, s0
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; HARD-NEXT: vmov r0, s0
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; HARD-NEXT: bx lr
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;
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; SOFT-LABEL: f2:
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; SOFT: @ %bb.0: @ %entry
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; SOFT-NEXT: .save {r11, lr}
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; SOFT-NEXT: push {r11, lr}
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; SOFT-NEXT: uxth r0, r0
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; SOFT-NEXT: bl __aeabi_h2f
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; SOFT-NEXT: mov r1, #1065353216
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; SOFT-NEXT: bl __aeabi_fadd
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; SOFT-NEXT: bl __aeabi_f2h
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; SOFT-NEXT: pop {r11, pc}
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entry:
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%0 = fadd half %a, 0xH3C00
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ret half %0
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}
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