; RUN: opt < %s -indvars -S | FileCheck %s
+; Provide legal integer types.
+target datalayout = "n8:16:32:64"
+
+
target triple = "x86_64-apple-darwin"
-; CHECK-LABEL: @sloop
+; CHECK-LABEL: @loop_0
; CHECK-LABEL: B18:
; Only one phi now.
; CHECK: phi
; One trunc for the dummy() call.
; CHECK-LABEL: exit24:
; CHECK: trunc i64 {{.*}}lcssa.wide to i32
-define void @sloop(i32* %a) {
+define void @loop_0(i32* %a) {
Prologue:
br i1 undef, label %B18, label %B6
%tmp23 = zext i32 %.02 to i64
%tmp33 = add i32 %.02, 1
%o = getelementptr i32, i32* %a, i32 %.02
- %v = load i32* %o
+ %v = load i32, i32* %o
%t = icmp eq i32 %v, 0
br i1 %t, label %exit24, label %B24
unreachable
}
+define void @loop_1(i32 %lim) {
+; CHECK-LABEL: @loop_1(
+ entry:
+ %entry.cond = icmp ne i32 %lim, 0
+ br i1 %entry.cond, label %loop, label %leave
+
+ loop:
+; CHECK: loop:
+; CHECK: %indvars.iv = phi i64 [ 1, %loop.preheader ], [ %indvars.iv.next, %loop ]
+; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+; CHECK: [[IV_INC:%[^ ]+]] = add nsw i64 %indvars.iv, -1
+; CHECK: call void @dummy.i64(i64 [[IV_INC]])
+
+ %iv = phi i32 [ 1, %entry ], [ %iv.inc, %loop ]
+ %iv.inc = add i32 %iv, 1
+ %iv.inc.sub = add i32 %iv, -1
+ %iv.inc.sub.zext = zext i32 %iv.inc.sub to i64
+ call void @dummy.i64(i64 %iv.inc.sub.zext)
+ %be.cond = icmp ult i32 %iv.inc, %lim
+ br i1 %be.cond, label %loop, label %leave
+
+ leave:
+ ret void
+}
+
declare void @dummy(i32)
+declare void @dummy.i64(i64)