llvm/test/Transforms/SCCP/atomic-load-store.ll
Eli Friedman 89e0f4b5b0 Add missing newline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138964 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01 21:20:11 +00:00

31 lines
644 B
LLVM

; RUN: opt < %s -ipsccp -S | FileCheck %s
; This transformation is safe for atomic loads and stores; check that it works.
@G = internal global i32 17
@C = internal constant i32 222
define i32 @test1() {
%V = load atomic i32* @G seq_cst, align 4
%C = icmp eq i32 %V, 17
br i1 %C, label %T, label %F
T:
store atomic i32 17, i32* @G seq_cst, align 4
ret i32 %V
F:
store atomic i32 123, i32* @G seq_cst, align 4
ret i32 0
}
; CHECK: define i32 @test1
; CHECK-NOT: store
; CHECK: ret i32 17
define i32 @test2() {
%V = load atomic i32* @C seq_cst, align 4
ret i32 %V
}
; CHECK: define i32 @test2
; CHECK-NOT: load
; CHECK: ret i32 222