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; RUN: opt -indvars -S < %s | FileCheck %s
declare void @use(i1)
declare void @llvm.experimental.guard(i1, ...)
define void @test_01(i8 %t) {
; CHECK-LABEL: test_01
entry:
%st = sext i8 %t to i16
%cmp1 = icmp slt i16 %st, 42
call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ]
br label %loop
loop:
; CHECK-LABEL: loop
%idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
%idx.inc = add i8 %idx, 1
%c = icmp slt i8 %idx, 42
; CHECK: call void @use(i1 true)
call void @use(i1 %c)
%be = icmp slt i8 %idx.inc, 42
br i1 %be, label %loop, label %exit
exit:
ret void
}
define void @test_02(i8 %t) {
; CHECK-LABEL: test_02
entry:
%t.ptr = inttoptr i8 %t to i8*
%p.42 = inttoptr i8 42 to i8*
%cmp1 = icmp slt i8* %t.ptr, %p.42
call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ]
br label %loop
loop:
; CHECK-LABEL: loop
%idx = phi i8* [ %t.ptr, %entry ], [ %snext, %loop ]
%snext = getelementptr inbounds i8, i8* %idx, i64 1
%c = icmp slt i8* %idx, %p.42
; CHECK: call void @use(i1 true)
call void @use(i1 %c)
%be = icmp slt i8* %snext, %p.42
br i1 %be, label %loop, label %exit
exit:
ret void
}
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