mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-03 15:29:28 +00:00
9f93d30a26
Also, generalize ScalarEvolutions's min and max recognition to handle some new forms of min and max that this change makes more common. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102234 91177308-0d34-0410-b5e6-96231b3b80d8
32 lines
879 B
LLVM
32 lines
879 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution |& \
|
|
; RUN: grep {Loop %bb: backedge-taken count is (7 + (-1 \\* %argc))}
|
|
|
|
define i32 @main(i32 %argc, i8** %argv) nounwind {
|
|
entry:
|
|
%0 = icmp ugt i32 %argc, 7 ; <i1> [#uses=1]
|
|
br i1 %0, label %bb2, label %bb.nph
|
|
|
|
bb.nph: ; preds = %entry
|
|
br label %bb
|
|
|
|
bb: ; preds = %bb.nph, %bb1
|
|
%indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2]
|
|
%argc_addr.04 = add i32 %indvar, %argc ; <i32> [#uses=1]
|
|
tail call void (...)* @Test() nounwind
|
|
%1 = add i32 %argc_addr.04, 1 ; <i32> [#uses=1]
|
|
br label %bb1
|
|
|
|
bb1: ; preds = %bb
|
|
%phitmp = icmp ugt i32 %1, 7 ; <i1> [#uses=1]
|
|
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
|
|
br i1 %phitmp, label %bb1.bb2_crit_edge, label %bb
|
|
|
|
bb1.bb2_crit_edge: ; preds = %bb1
|
|
br label %bb2
|
|
|
|
bb2: ; preds = %bb1.bb2_crit_edge, %entry
|
|
ret i32 0
|
|
}
|
|
|
|
declare void @Test(...)
|