llvm-project/llvm/test/Transforms/GVNHoist/hoist-pr22005.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

31 lines
832 B
LLVM
Raw Normal View History

; RUN: opt -gvn-hoist -S < %s | FileCheck %s
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Check that all "sub" expressions are hoisted.
; CHECK-LABEL: @fun
; CHECK: sub i64
; CHECK-NOT: sub i64
define i64 @fun(i8* %out, i8* %end) {
%1 = icmp ult i8* %out, %end
br i1 %1, label %2, label %6
; <label>:2 ; preds = %0
%3 = ptrtoint i8* %end to i64
%4 = ptrtoint i8* %out to i64
%5 = sub i64 %3, %4
br label %10
; <label>:6 ; preds = %0
%7 = ptrtoint i8* %out to i64
%8 = ptrtoint i8* %end to i64
%9 = sub i64 %8, %7
br label %10
; <label>:10 ; preds = %6, %2
%.in = phi i64 [ %5, %2 ], [ %9, %6 ]
%11 = add i64 %.in, 257
ret i64 %11
}