forked from OSchip/llvm-project
71 lines
1.5 KiB
LLVM
71 lines
1.5 KiB
LLVM
; RUN: opt -S -basicaa -licm %s | FileCheck %s
|
|
; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
|
|
declare i32 @foo() readonly argmemonly nounwind
|
|
declare i32 @foo2() readonly nounwind
|
|
declare i32 @bar(i32* %loc2) readonly argmemonly nounwind
|
|
|
|
define void @test(i32* %loc) {
|
|
; CHECK-LABEL: @test
|
|
; CHECK: @foo
|
|
; CHECK-LABEL: loop:
|
|
br label %loop
|
|
|
|
loop:
|
|
%res = call i32 @foo()
|
|
store i32 %res, i32* %loc
|
|
br label %loop
|
|
}
|
|
|
|
; Negative test: show argmemonly is required
|
|
define void @test_neg(i32* %loc) {
|
|
; CHECK-LABEL: @test_neg
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: @foo
|
|
br label %loop
|
|
|
|
loop:
|
|
%res = call i32 @foo2()
|
|
store i32 %res, i32* %loc
|
|
br label %loop
|
|
}
|
|
|
|
define void @test2(i32* noalias %loc, i32* noalias %loc2) {
|
|
; CHECK-LABEL: @test2
|
|
; CHECK: @bar
|
|
; CHECK-LABEL: loop:
|
|
br label %loop
|
|
|
|
loop:
|
|
%res = call i32 @bar(i32* %loc2)
|
|
store i32 %res, i32* %loc
|
|
br label %loop
|
|
}
|
|
|
|
; Negative test: %might clobber gep
|
|
define void @test3(i32* %loc) {
|
|
; CHECK-LABEL: @test3
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: @bar
|
|
br label %loop
|
|
|
|
loop:
|
|
%res = call i32 @bar(i32* %loc)
|
|
%gep = getelementptr i32, i32 *%loc, i64 1000000
|
|
store i32 %res, i32* %gep
|
|
br label %loop
|
|
}
|
|
|
|
|
|
; Negative test: %loc might alias %loc2
|
|
define void @test4(i32* %loc, i32* %loc2) {
|
|
; CHECK-LABEL: @test4
|
|
; CHECK-LABEL: loop:
|
|
; CHECK: @bar
|
|
br label %loop
|
|
|
|
loop:
|
|
%res = call i32 @bar(i32* %loc2)
|
|
store i32 %res, i32* %loc
|
|
br label %loop
|
|
}
|