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e2dbaabfc8
Instead of loading 0 from a constant pool, it's of course much better to materialize it using an fmov and the zero register. Thanks to Ahmed Bougacha for the suggestion. Differential Revision: https://reviews.llvm.org/D37102 llvm-svn: 311662
106 lines
3.1 KiB
LLVM
106 lines
3.1 KiB
LLVM
; RUN: llc < %s -mtriple=aarch64-none-eabi -mattr=+fullfp16 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ILLEGAL
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; RUN: llc < %s -mtriple=aarch64-none-eabi -mattr=+fullfp16,+zcz | FileCheck %s --check-prefix=CHECK-ZCZ
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; RUN: llc < %s -mtriple=aarch64-none-eabi -mattr=-fullfp16 | FileCheck %s --check-prefix=CHECK-NOFP16 --check-prefix=CHECK-ILLEGAL
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define half @Const0() {
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entry:
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ret half 0xH0000
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}
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; CHECK-DAG-ILLEGAL-LABEL: Const0:
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; CHECK-DAG-ILLEGAL-NEXT: fmov h0, wzr
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; CHECK-DAG-ILLEGAL-NEXT: ret
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; CHECK-ZCZ-LABEL: Const0:
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; CHECK-ZCZ: movi v0.2d, #0000000000000000
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; CHECK-ZCZ-NEXT: ret
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define half @Const1() {
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entry:
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ret half 0xH3C00
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}
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; CHECK-DAG-LABEL: Const1:
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; CHECK-DAG-NEXT: fmov h0, #1.00000000
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; CHECK-DAG-NEXT: ret
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; CHECK-NOFP16: .[[LBL1:LCPI1_[0-9]]]:
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; CHECK-NOFP16-NEXT: .hword 15360 // half 1
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; CHECK-NOFP16-LABEL: Const1:
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; CHECK-NOFP16: adrp x[[NUM:[0-9]+]], .[[LBL1]]
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; CHECK-NOFP16-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL1]]]
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define half @Const2() {
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entry:
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ret half 0xH3000
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}
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; CHECK-DAG-LABEL: Const2:
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; CHECK-DAG-NEXT: fmov h0, #0.12500000
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; CHECK-DAG-NEXT: ret
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; CHECK-NOFP16: .[[LBL2:LCPI2_[0-9]]]:
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; CHECK-NOFP16-NEXT: .hword 12288 // half 0.125
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; CHECK-NOFP16-LABEL: Const2:
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; CHECK-NOFP16: adrp x[[NUM:[0-9]+]], .[[LBL2]]
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; CHECK-NOFP16-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL2]]]
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define half @Const3() {
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entry:
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ret half 0xH4F80
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}
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; CHECK-DAG-LABEL: Const3:
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; CHECK-DAG-NEXT: fmov h0, #30.00000000
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; CHECK-DAG-NEXT: ret
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; CHECK-NOFP16: .[[LBL3:LCPI3_[0-9]]]:
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; CHECK-NOFP16-NEXT: .hword 20352 // half 30
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; CHECK-NOFP16-LABEL: Const3:
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; CHECK-NOFP16: adrp x[[NUM:[0-9]+]], .[[LBL3]]
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; CHECK-NOFP16-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL3]]]
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define half @Const4() {
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entry:
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ret half 0xH4FC0
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}
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; CHECK-DAG-LABEL: Const4:
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; CHECK-DAG-NEXT: fmov h0, #31.00000000
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; CHECK-DAG-NEXT: ret
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; CHECK-NOFP16: .[[LBL4:LCPI4_[0-9]]]:
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; CHECK-NOFP16-NEXT: .hword 20416 // half 31
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; CHECK-NOFP16-LABEL: Const4:
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; CHECK-NOFP16: adrp x[[NUM:[0-9]+]], .[[LBL4]]
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; CHECK-NOFP16-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL4]]]
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define half @Const5() {
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entry:
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ret half 0xH2FF0
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}
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; CHECK-ILLEGAL: .[[LBL5:LCPI5_[0-9]]]:
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; CHECK-ILLEGAL-NEXT: .hword 12272 // half 0.12402
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; CHECK-ILLEGAL-LABEL: Const5:
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; CHECK-ILLEGAL: adrp x[[NUM:[0-9]+]], .[[LBL5]]
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; CHECK-ILLEGAL-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL5]]]
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define half @Const6() {
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entry:
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ret half 0xH4FC1
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}
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; CHECK-ILLEGAL: .[[LBL6:LCPI6_[0-9]]]:
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; CHECK-ILLEGAL-NEXT: .hword 20417 // half 31.016
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; CHECK-ILLEGAL-LABEL: Const6:
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; CHECK-ILLEGAL: adrp x[[NUM:[0-9]+]], .[[LBL6]]
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; CHECK-ILLEGAL-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL6]]]
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define half @Const7() {
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entry:
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ret half 0xH5000
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}
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; CHECK-ILLEGAL: .[[LBL7:LCPI7_[0-9]]]:
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; CHECK-ILLEGAL-NEXT: .hword 20480 // half 32
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; CHECK-ILLEGAL-LABEL: Const7:
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; CHECK-ILLEGAL: adrp x[[NUM:[0-9]+]], .[[LBL7]]
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; CHECK-ILLEGAL-NEXT: ldr h0, [x[[NUM]], :lo12:.[[LBL7]]]
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