Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/test/Transforms/InstCombine/prevent-cmp-merge.ll

@@ -1,41 +0,0 @@
-; RUN: opt < %s -instcombine -S | FileCheck %s
-;
-; This test makes sure that InstCombine does not replace the sequence of
-; xor/sub instruction followed by cmp instruction into a single cmp instruction
-; if there is more than one use of xor/sub.
-
-define zeroext i1 @test1(i32 %lhs, i32 %rhs) {
-; CHECK-LABEL: @test1(
-; CHECK-NEXT: %xor = xor i32 %lhs, 5
-; CHECK-NEXT: %cmp1 = icmp eq i32 %xor, 10
-
-  %xor = xor i32 %lhs, 5
-  %cmp1 = icmp eq i32 %xor, 10
-  %cmp2 = icmp eq i32 %xor, %rhs
-  %sel = or i1 %cmp1, %cmp2
-  ret i1 %sel
-}
-
-define zeroext i1 @test2(i32 %lhs, i32 %rhs) {
-; CHECK-LABEL: @test2(
-; CHECK-NEXT: %xor = xor i32 %lhs, %rhs
-; CHECK-NEXT: %cmp1 = icmp eq i32 %xor, 0
-
-  %xor = xor i32 %lhs, %rhs
-  %cmp1 = icmp eq i32 %xor, 0
-  %cmp2 = icmp eq i32 %xor, 32
-  %sel = xor i1 %cmp1, %cmp2
-  ret i1 %sel
-}
-
-define zeroext i1 @test3(i32 %lhs, i32 %rhs) {
-; CHECK-LABEL: @test3(
-; CHECK-NEXT: %sub = sub nsw i32 %lhs, %rhs
-; CHECK-NEXT: %cmp1 = icmp eq i32 %sub, 0
-
-  %sub = sub nsw i32 %lhs, %rhs
-  %cmp1 = icmp eq i32 %sub, 0
-  %cmp2 = icmp eq i32 %sub, 31
-  %sel = or i1 %cmp1, %cmp2
-  ret i1 %sel
-}