derek.holloway
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35 lines
1.0 KiB
LLVM
35 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64 | FileCheck %s
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; RUN: llc < %s -mtriple=aarch64 --global-isel | FileCheck %s --check-prefix=GISEL
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define i35 @f(i35 %0) {
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; CHECK-LABEL: f:
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; CHECK: // %bb.0:
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; CHECK-NEXT: sbfx x8, x0, #0, #35
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; CHECK-NEXT: mov w9, #1 // =0x1
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; CHECK-NEXT: sdiv x10, x9, x8
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; CHECK-NEXT: msub x8, x10, x8, x9
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; CHECK-NEXT: clz x8, x8
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; CHECK-NEXT: sub w8, w8, #29
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; CHECK-NEXT: ubfx x0, x8, #5, #2
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: f:
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; GISEL: // %bb.0:
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; GISEL-NEXT: sbfx x8, x0, #0, #35
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; GISEL-NEXT: mov w9, #1 // =0x1
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; GISEL-NEXT: sdiv x10, x9, x8
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; GISEL-NEXT: msub x8, x10, x8, x9
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; GISEL-NEXT: and x8, x8, #0x7ffffffff
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; GISEL-NEXT: clz x8, x8
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; GISEL-NEXT: sub x8, x8, #29
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; GISEL-NEXT: lsr x0, x8, #5
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; GISEL-NEXT: ret
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%2 = srem i35 1, %0
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%3 = call i35 @llvm.ctlz.i35(i35 %2, i1 false)
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%4 = lshr i35 %3, 5
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ret i35 %4
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}
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declare i35 @llvm.ctlz.i35(i35, i1 immarg)
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