//===---------------------------------------------------------------------===//
-Turn this into a single byte store with no load (the other 3 bytes are
-unmodified):
-
-define void @test(i32* %P) {
- %tmp = load i32* %P
- %tmp14 = or i32 %tmp, 3305111552
- %tmp15 = and i32 %tmp14, 3321888767
- store i32 %tmp15, i32* %P
- ret void
-}
-
-//===---------------------------------------------------------------------===//
-
quantum_sigma_x in 462.libquantum contains the following loop:
for(i=0; i<reg->size; i++)
//===---------------------------------------------------------------------===//
+We should use DSE + llvm.lifetime.end to delete dead vtable pointer updates.
+See GCC PR34949
+
+//===---------------------------------------------------------------------===//
+
+In this code:
+
+long foo(long x) {
+ return x > 1 ? x : 1;
+}
+
+LLVM emits a comparison with 1 instead of 0. 0 would be equivalent
+and cheaper on most targets.
+
+LLVM prefers comparisons with zero over non-zero in general, but in this
+case it choses instead to keep the max operation obvious.
+
+//===---------------------------------------------------------------------===//