24 lines
422 B
LLVM
24 lines
422 B
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
|
|
|
|
; CHECK-LABEL: @speculatable_attribute
|
|
; CHECK: select
|
|
define i32 @speculatable_attribute(i32 %a) {
|
|
entry:
|
|
%c = icmp sgt i32 %a, 64
|
|
br i1 %c, label %end, label %if
|
|
|
|
if:
|
|
%val = call i32 @func() #0
|
|
br label %end
|
|
|
|
end:
|
|
%ret = phi i32 [%val, %if], [0, %entry]
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i32 @func() #0 {
|
|
ret i32 1
|
|
}
|
|
attributes #0 = { nounwind readnone speculatable }
|
|
|