IRCE: use SCEVs instead of llvm::Value's for intermediate
calculations. Semantically non-functional change.
This gets rid of some of the SCEV -> Value -> SCEV round tripping and
the Construct(SMin|SMax)Of and MaybeSimplify helper routines.
llvm-svn: 230150
diff --git a/llvm/test/Transforms/IRCE/single-access-with-preloop.ll b/llvm/test/Transforms/IRCE/single-access-with-preloop.ll
index dacf697..c220efa 100644
--- a/llvm/test/Transforms/IRCE/single-access-with-preloop.ll
+++ b/llvm/test/Transforms/IRCE/single-access-with-preloop.ll
@@ -29,12 +29,16 @@
}
; CHECK-LABEL: loop.preheader:
-; CHECK: [[safe_start:[^ ]+]] = sub i32 0, %offset
-; CHECK: [[safe_end:[^ ]+]] = sub i32 %len, %offset
-; CHECK: [[exit_preloop_at_cond:[^ ]+]] = icmp slt i32 %n, [[safe_start]]
-; CHECK: [[exit_preloop_at:[^ ]+]] = select i1 [[exit_preloop_at_cond]], i32 %n, i32 [[safe_start]]
-; CHECK: [[exit_mainloop_at_cond:[^ ]+]] = icmp slt i32 %n, [[safe_end]]
-; CHECK: [[exit_mainloop_at:[^ ]+]] = select i1 [[exit_mainloop_at_cond]], i32 %n, i32 [[safe_end]]
+; CHECK: [[not_safe_start:[^ ]+]] = add i32 %offset, -1
+; CHECK: [[not_n:[^ ]+]] = sub i32 -1, %n
+; CHECK: [[not_exit_preloop_at_cond:[^ ]+]] = icmp sgt i32 [[not_safe_start]], [[not_n]]
+; CHECK: [[not_exit_preloop_at:[^ ]+]] = select i1 [[not_exit_preloop_at_cond]], i32 [[not_safe_start]], i32 [[not_n]]
+; CHECK: [[exit_preloop_at:[^ ]+]] = sub i32 -1, [[not_exit_preloop_at]]
+
+; CHECK: [[not_safe_end:[^ ]+]] = sub i32 [[not_safe_start]], %len
+; CHECK: [[not_exit_mainloop_at_cond:[^ ]+]] = icmp sgt i32 [[not_safe_end]], [[not_n]]
+; CHECK: [[not_exit_mainloop_at:[^ ]+]] = select i1 [[not_exit_mainloop_at_cond]], i32 [[not_safe_end]], i32 [[not_n]]
+; CHECK: [[exit_mainloop_at:[^ ]+]] = sub i32 -1, [[not_exit_mainloop_at]]
; CHECK-LABEL: in.bounds:
; CHECK: [[continue_mainloop_cond:[^ ]+]] = icmp slt i32 %idx.next, [[exit_mainloop_at]]