derek.holloway
7502bf64a4
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45 lines
1.7 KiB
LLVM
45 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=arm64-apple-ios -global-isel -global-isel-abort=1 | FileCheck %s --check-prefix=CHECK-NOFP16
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; RUN: llc < %s -mtriple=arm64-apple-ios -mattr=+fullfp16 -global-isel -global-isel-abort=1 | FileCheck %s --check-prefix=CHECK-FP16
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; Test for https://github.com/llvm/llvm-project/issues/171494
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; Atomic store of bitcast half to i16 was generating incorrect code (mrs instead of fmov).
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define void @atomic_store_half(ptr %addr, half %val) {
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; CHECK-NOFP16-LABEL: atomic_store_half:
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; CHECK-NOFP16: ; %bb.0:
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; CHECK-NOFP16-NEXT: ; kill: def $h0 killed $h0 def $s0
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; CHECK-NOFP16-NEXT: fmov w8, s0
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; CHECK-NOFP16-NEXT: stlrh w8, [x0]
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; CHECK-NOFP16-NEXT: ret
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;
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; CHECK-FP16-LABEL: atomic_store_half:
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; CHECK-FP16: ; %bb.0:
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; CHECK-FP16-NEXT: ; kill: def $h0 killed $h0 def $s0
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; CHECK-FP16-NEXT: fmov w8, s0
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; CHECK-FP16-NEXT: stlrh w8, [x0]
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; CHECK-FP16-NEXT: ret
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%ival = bitcast half %val to i16
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store atomic i16 %ival, ptr %addr release, align 2
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ret void
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}
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define void @atomic_store_bfloat(ptr %addr, bfloat %val) {
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; CHECK-NOFP16-LABEL: atomic_store_bfloat:
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; CHECK-NOFP16: ; %bb.0:
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; CHECK-NOFP16-NEXT: ; kill: def $h0 killed $h0 def $s0
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; CHECK-NOFP16-NEXT: fmov w8, s0
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; CHECK-NOFP16-NEXT: stlrh w8, [x0]
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; CHECK-NOFP16-NEXT: ret
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;
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; CHECK-FP16-LABEL: atomic_store_bfloat:
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; CHECK-FP16: ; %bb.0:
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; CHECK-FP16-NEXT: ; kill: def $h0 killed $h0 def $s0
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; CHECK-FP16-NEXT: fmov w8, s0
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; CHECK-FP16-NEXT: stlrh w8, [x0]
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; CHECK-FP16-NEXT: ret
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%ival = bitcast bfloat %val to i16
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store atomic i16 %ival, ptr %addr release, align 2
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ret void
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}
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