28 lines
684 B
LLVM
28 lines
684 B
LLVM
; RUN: opt < %s -basicaa -dse -enable-nonlocal-dse -S | FileCheck %s
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; The add and store in entry block should be removed by non-local DSE.
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; CHECK-NOT: %stval = add
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; CHECK-NOT: store i32 %stval
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;
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define void @foo(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %c) {
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entry:
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%0 = load i32, i32* %b, align 4
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%stval = add nsw i32 %0, 1
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store i32 %stval, i32* %a, align 4
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%cmp = icmp sgt i32 %c, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%1 = add nsw i32 %c, 10
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br label %if.end
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if.else:
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%2 = add nsw i32 %c, 13
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br label %if.end
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if.end:
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%3 = phi i32 [ %1, %if.then ], [ %2, %if.else ]
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store i32 %3, i32* %a, align 4
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ret void
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}
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