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We turned off the CMN instruction because it had semantics which we weren't getting correct. If we are comparing with an immediate, then it's okay to use the CMN instruction. <rdar://problem/7569620> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158302 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
445 B
LLVM
23 lines
445 B
LLVM
; RUN: llc < %s -mtriple thumbv7-apple-ios | FileCheck %s
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; <rdar://problem/7569620>
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define i32 @compare_i_gt(i32 %a) {
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entry:
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; CHECK: compare_i_gt
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; CHECK-NOT: mvn
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; CHECK: cmn
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%cmp = icmp sgt i32 %a, -78
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%. = zext i1 %cmp to i32
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ret i32 %.
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}
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define i32 @compare_r_eq(i32 %a, i32 %b) {
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entry:
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; CHECK: compare_r_eq
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; CHECK: cmn
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%sub = sub nsw i32 0, %b
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%cmp = icmp eq i32 %a, %sub
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%. = zext i1 %cmp to i32
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ret i32 %.
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}
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