File: badloadsink.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (26 lines) | stat: -rw-r--r-- 798 bytes parent folder | download | duplicates (12)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
; RUN: opt < %s -passes=sink -S | FileCheck %s
declare void @foo(ptr)
declare ptr @llvm.load.relative.i32(ptr %ptr, i32 %offset) argmemonly nounwind readonly
define i64 @sinkload(i1 %cmp, ptr %ptr, i32 %off) {
; CHECK-LABEL: @sinkload
top:
    %a = alloca i64
; CHECK: call void @foo(ptr %a)
; CHECK-NEXT: %x = load i64, ptr %a
; CHECK-NEXT: %y = call ptr @llvm.load.relative.i32(ptr %ptr, i32 %off)
    call void @foo(ptr %a)
    %x = load i64, ptr %a
    %y = call ptr @llvm.load.relative.i32(ptr %ptr, i32 %off)
    br i1 %cmp, label %A, label %B
A:
    store i64 0, ptr %a
    store i8 0, ptr %ptr
    br label %B
B:
; CHECK-NOT: load i64, ptr %a
; CHECK-NOT: call ptr @llvm.load.relative(ptr %ptr, i32 off)
    %y2 = ptrtoint ptr %y to i64
    %retval = add i64 %y2, %x
    ret i64 %retval
}