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e72ff8829e
Because i16 is illegal, there's no native DAG method to represent a bitcast to or from an f16 type. This meant LLVM was inserting a stack store/load pair which is really not ideal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213378 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
1.9 KiB
LLVM
84 lines
1.9 KiB
LLVM
; RUN: llc < %s -mtriple=arm64-apple-ios7.0 | FileCheck %s
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define void @test_load_store(half* %in, half* %out) {
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; CHECK-LABEL: test_load_store:
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; CHECK: ldr [[TMP:h[0-9]+]], [x0]
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; CHECK: str [[TMP]], [x1]
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%val = load half* %in
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store half %val, half* %out
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ret void
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}
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define i16 @test_bitcast_from_half(half* %addr) {
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; CHECK-LABEL: test_bitcast_from_half:
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; CHECK: ldrh w0, [x0]
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%val = load half* %addr
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%val_int = bitcast half %val to i16
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ret i16 %val_int
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}
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define i16 @test_reg_bitcast_from_half(half %in) {
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; CHECK-LABEL: test_reg_bitcast_from_half:
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; CHECK-NOT: str
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; CHECK-NOT: ldr
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; CHECK-DAG: fmov w0, s0
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; CHECK: ret
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%val = bitcast half %in to i16
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ret i16 %val
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}
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define void @test_bitcast_to_half(half* %addr, i16 %in) {
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; CHECK-LABEL: test_bitcast_to_half:
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; CHECK: strh w1, [x0]
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%val_fp = bitcast i16 %in to half
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store half %val_fp, half* %addr
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ret void
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}
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define half @test_reg_bitcast_to_half(i16 %in) {
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; CHECK-LABEL: test_reg_bitcast_to_half:
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; CHECK-NOT: str
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; CHECK-NOT: ldr
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; CHECK-DAG: fmov s0, w0
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; CHECK: ret
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%val = bitcast i16 %in to half
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ret half %val
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}
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define float @test_extend32(half* %addr) {
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; CHECK-LABEL: test_extend32:
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; CHECK: fcvt {{s[0-9]+}}, {{h[0-9]+}}
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%val16 = load half* %addr
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%val32 = fpext half %val16 to float
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ret float %val32
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}
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define double @test_extend64(half* %addr) {
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; CHECK-LABEL: test_extend64:
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; CHECK: fcvt {{d[0-9]+}}, {{h[0-9]+}}
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%val16 = load half* %addr
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%val32 = fpext half %val16 to double
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ret double %val32
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}
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define void @test_trunc32(float %in, half* %addr) {
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; CHECK-LABEL: test_trunc32:
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; CHECK: fcvt {{h[0-9]+}}, {{s[0-9]+}}
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%val16 = fptrunc float %in to half
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store half %val16, half* %addr
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ret void
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}
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define void @test_trunc64(double %in, half* %addr) {
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; CHECK-LABEL: test_trunc64:
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; CHECK: fcvt {{h[0-9]+}}, {{d[0-9]+}}
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%val16 = fptrunc double %in to half
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store half %val16, half* %addr
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ret void
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}
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