Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/Transforms/InstCombine/2006-12-05-fp-to-int-ext.ll

@@ -0,0 +1,12 @@
+; RUN: opt < %s -instcombine -S | grep zext
+
+; Never merge these two conversions, even though it's possible: this is
+; significantly more expensive than the two conversions on some targets
+; and it causes libgcc to be compile __fixunsdfdi into a recursive 
+; function.
+define i64 @test(double %D) {
+        %A = fptoui double %D to i32            ; <i32> [#uses=1]
+        %B = zext i32 %A to i64         ; <i64> [#uses=1]
+        ret i64 %B
+}
+