derek.holloway
7502bf64a4
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35 lines
998 B
LLVM
35 lines
998 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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; RUN: llc < %s -mtriple=arm64-unknown-unknown-gnu | FileCheck %s --check-prefix=CHECK
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define i8 @pow2_trunc_orzero_false_notzero(i32 %x, i8 %z){
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; CHECK-LABEL: pow2_trunc_orzero_false_notzero:
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; CHECK: // %bb.0:
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; CHECK-NEXT: and w8, w1, #0xff
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; CHECK-NEXT: and w9, w0, #0x7
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; CHECK-NEXT: lsr w0, w8, w9
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; CHECK-NEXT: ret
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%amt = and i32 %x, 7
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%y = shl i32 1, %amt
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%tr = trunc i32 %y to i8
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%div = udiv i8 %z, %tr
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ret i8 %div
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}
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define i8 @pow2_trunc_orzero_false_maybezero(i32 %x, i8 %z){
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; CHECK-LABEL: pow2_trunc_orzero_false_maybezero:
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; CHECK: // %bb.0:
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; CHECK-NEXT: neg w8, w0
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; CHECK-NEXT: and w9, w1, #0xff
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; CHECK-NEXT: and w8, w0, w8
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; CHECK-NEXT: and w8, w8, #0xff
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; CHECK-NEXT: udiv w0, w9, w8
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; CHECK-NEXT: ret
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%neg_x = sub i32 0, %x
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%y = and i32 %x, %neg_x
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%tr = trunc i32 %y to i8
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%div = udiv i8 %z, %tr
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ret i8 %div
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}
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