1 ; RUN: opt -S -indvars < %s | FileCheck %s 2 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.11.0" 5 6 declare void @use(i1) 7 8 define void @f(i32 %x) { 9 ; CHECK-LABEL: @f( 10 entry: 11 %conv = sext i32 %x to i64 12 %sub = add i64 %conv, -1 13 %ec = icmp sgt i32 %x, 0 14 br i1 %ec, label %loop, label %leave 15 16 loop: 17 ; CHECK: loop: 18 %iv = phi i64 [ 0, %entry ], [ %iv.inc, %loop ] 19 %iv.inc = add i64 %iv, 1 20 %cmp = icmp slt i64 %iv, %sub 21 call void @use(i1 %cmp) 22 ; CHECK: call void @use(i1 %cmp) 23 ; CHECK-NOT: call void @use(i1 true) 24 25 %be.cond = icmp slt i64 %iv.inc, %conv 26 br i1 %be.cond, label %loop, label %leave 27 28 leave: 29 ret void 30 } 31
