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; RUN: opt -codegenprepare -S < %s | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv8m.main-arm-none-eabi"
; CHECK-LABEL: uadd_overflow_too_far_cmp_dom
; CHECK-NOT: with.overflow.i32
define i32 @uadd_overflow_too_far_cmp_dom(i32 %arg0) {
entry:
%cmp = icmp ne i32 %arg0, 0
br i1 %cmp, label %if.else, label %if.then
if.then:
call void @foo()
br label %exit
if.else:
call void @bar()
br label %if.end
if.end:
%dec = add nsw i32 %arg0, -1
br label %exit
exit:
%res = phi i32 [ %arg0, %if.then ], [ %dec, %if.end ]
ret i32 %res
}
; CHECK-LABEL: uadd_overflow_too_far_math_dom
; CHECK-NOT: with.overflow.i32
define i32 @uadd_overflow_too_far_math_dom(i32 %arg0, i32 %arg1) {
entry:
%dec = add nsw i32 %arg0, -1
%cmp = icmp ugt i32 %arg0, 1
br i1 %cmp, label %if.else, label %if.then
if.then:
call void @foo()
br label %if.end
if.else:
call void @bar()
br label %if.end
if.end:
%cmp.i.i = icmp ne i32 %arg0, 0
%tobool = zext i1 %cmp.i.i to i32
br label %exit
exit:
ret i32 %tobool
}
declare void @foo()
declare void @bar()
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