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annotate test/CodeGen/AArch64/arm64-icmp-opt.ll @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents
children 1172e4bd9c6f
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77
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -march=arm64 | FileCheck %s
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 ; Optimize (x > -1) to (x >= 0) etc.
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 ; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 ; for comparison only
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ; rdar://10233472
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 define i32 @t1(i64 %a) nounwind ssp {
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 entry:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 ; CHECK-LABEL: t1:
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 ; CHECK-NOT: movn
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12 ; CHECK: cmp x0, #0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 ; CHECK: cset w0, ge
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 %cmp = icmp sgt i64 %a, -1
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 %conv = zext i1 %cmp to i32
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 ret i32 %conv
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 }