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https://github.com/c64scene-ar/llvm-6502.git
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199da600f3
This patch add code to remove unreachable blocks from function as they may cause jump threading to stuck in infinite loop. Differential Revision: http://reviews.llvm.org/D3991 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211103 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
482 B
LLVM
23 lines
482 B
LLVM
; RUN: opt -S -jump-threading < %s | FileCheck %s
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; CHECK-LABEL: @f(
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; CHECK-LABEL: entry
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; CHECK: ret void
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; CHECK-NOT: for.cond1
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; CHECK-NOT: for.body
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define void @f() {
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entry:
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ret void
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for.cond1:
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%i.025 = phi i32 [ %inc, %for.body ], [ %inc, %for.body ], [ 1, %for.cond1 ]
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%cmp = icmp slt i32 %i.025, 2
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br i1 %cmp, label %for.body, label %for.cond1
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for.body:
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%inc = add nsw i32 %i.025, 0
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%a = icmp ugt i32 %inc, 2
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br i1 %a, label %for.cond1, label %for.cond1
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}
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