Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Transforms/InstCombine/select-2.ll

@@ -0,0 +1,31 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+; CHECK: select
+; CHECK: select
+
+; Make sure instcombine don't fold select into operands. We don't want to emit
+; select of two integers unless it's selecting 0 / 1.
+
+define i32 @t1(i32 %c, i32 %x) nounwind {
+       %t1 = icmp eq i32 %c, 0
+       %t2 = lshr i32 %x, 18
+       %t3 = select i1 %t1, i32 %t2, i32 %x
+       ret i32 %t3
+}
+
+define i32 @t2(i32 %c, i32 %x) nounwind {
+       %t1 = icmp eq i32 %c, 0
+       %t2 = and i32 %x, 18
+       %t3 = select i1 %t1, i32 %t2, i32 %x
+       ret i32 %t3
+}
+
+define float @t3(float %x, float %y) nounwind {
+  %t1 = fcmp ogt float %x, %y
+  %t2 = select i1 %t1, float %x, float 1.0
+  %t3 = fadd fast float %t2, 1.0
+  ret float %t3
+; CHECK-LABEL: @t3(
+; CHECK: fadd fast
+; CHECK: select
+}