blob: 6e31d6f5f10bf4d26c377d64439593a9f7c96823 [file] [log] [blame]
; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s
; XFAIL: *
define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
; CHECK-LABEL: t1:
; CHECK: it ne
; CHECK: cmpne
switch i32 %c, label %cond_next [
i32 1, label %cond_true
i32 7, label %cond_true
]
cond_true:
%tmp12 = add i32 %a, 1
%tmp1518 = add i32 %tmp12, %b
ret i32 %tmp1518
cond_next:
%tmp15 = add i32 %b, %a
ret i32 %tmp15
}
; FIXME: Check for # of unconditional branch after adding branch folding post ifcvt.
define i32 @t2(i32 %a, i32 %b) nounwind {
entry:
; CHECK-LABEL: t2:
; CHECK: ite gt
; CHECK: subgt
; CHECK: suble
%tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1]
br i1 %tmp1434, label %bb17, label %bb.outer
bb.outer: ; preds = %cond_false, %entry
%b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5]
%a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]
br label %bb
bb: ; preds = %cond_true, %bb.outer
%indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2]
%tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1]
%tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1]
%a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6]
%tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1]
br i1 %tmp3, label %cond_true, label %cond_false
cond_true: ; preds = %bb
%tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2]
%tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1]
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
br i1 %tmp1437, label %bb17, label %bb
cond_false: ; preds = %bb
%tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2]
%tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1]
br i1 %tmp14, label %bb17, label %bb.outer
bb17: ; preds = %cond_false, %cond_true, %entry
%a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]
ret i32 %a_addr.026.1
}
@x = external global ptr ; <ptr> [#uses=1]
define void @foo(i32 %a) nounwind {
entry:
%tmp = load ptr, ptr @x ; <ptr> [#uses=1]
store i32 %a, ptr %tmp
ret void
}
; Tail call prevents use of ifcvt in this one. Seems like a win though.
define void @t3(i32 %a, i32 %b) nounwind {
entry:
; CHECK-LABEL: t3:
; CHECK-NOT: it lt
; CHECK-NOT: poplt
; CHECK: b.w _foo @ TAILCALL
%tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1]
br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock
cond_true: ; preds = %entry
tail call void @foo( i32 %b )
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}