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-rw-r--r--llvm/test/Transforms/InstCombine/icmp.ll12
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/icmp.ll b/llvm/test/Transforms/InstCombine/icmp.ll
index c8f7f81468f..77ca62cfec6 100644
--- a/llvm/test/Transforms/InstCombine/icmp.ll
+++ b/llvm/test/Transforms/InstCombine/icmp.ll
@@ -547,3 +547,15 @@ define i1 @test56(i32 %a) {
%cmp = icmp eq i32 %sub, 123
ret i1 %cmp
}
+
+; PR10267 Don't make icmps more expensive when no other inst is subsumed.
+declare void @foo(i32)
+; CHECK: @test57
+; CHECK: %and = and i32 %a, -2
+; CHECK: %cmp = icmp ne i32 %and, 0
+define i1 @test57(i32 %a) {
+ %and = and i32 %a, -2
+ %cmp = icmp ne i32 %and, 0
+ call void @foo(i32 %and)
+ ret i1 %cmp
+}
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