with recent work, we now optimize this into:

define i32 @foo(i32 %x) nounwind readnone ssp {
entry:
  %tobool = icmp eq i32 %x, 0
  %tmp5 = select i1 %tobool, i32 2, i32 1
  ret i32 %tmp5
}

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124091 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index ea9bc8d84c8c0fc67592b5087e06b39ce64b27b6..153c7d906808ded7fde46bf6bb93744fafa7021f 100644 (file)
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -1270,26 +1270,6 @@ SingleSource/Benchmarks/Misc/dt.c
 
 //===---------------------------------------------------------------------===//
 
-A/B get pinned to the stack because we turn an if/then into a select instead
-of PRE'ing the load/store.  This may be fixable in instcombine:
-http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37892
-
-struct X { int i; };
-int foo (int x) {
-  struct X a;
-  struct X b;
-  struct X *p;
-  a.i = 1;
-  b.i = 2;
-  if (x)
-    p = &a;
-  else
-    p = &b;
-  return p->i;
-}
-
-//===---------------------------------------------------------------------===//
-
 Interesting missed case because of control flow flattening (should be 2 loads):
 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26629
 With: llvm-gcc t2.c -S -o - -O0 -emit-llvm | llvm-as |