forked from OSchip/llvm-project
104 lines
2.3 KiB
LLVM
104 lines
2.3 KiB
LLVM
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; RUN: opt < %s -correlated-propagation -S | FileCheck %s
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define void @test1(i8* %ptr) {
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; CHECK: test1
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%A = load i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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; CHECK-NOT: icmp
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ret void
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}
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define void @test2(i8* %ptr) {
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; CHECK: test2
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store i8 0, i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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; CHECK-NOT: icmp
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ret void
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}
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define void @test3() {
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; CHECK: test3
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%ptr = alloca i8
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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; CHECK-NOT: icmp
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
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define void @test4(i8* %dest, i8* %src) {
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; CHECK: test4
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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; CHECK-NOT: icmp
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ret void
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}
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declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
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define void @test5(i8* %dest, i8* %src) {
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; CHECK: test5
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call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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; CHECK-NOT: icmp
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ret void
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}
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declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1)
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define void @test6(i8* %dest) {
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; CHECK: test6
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call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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; CHECK-NOT: icmp
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ret void
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}
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define void @test7(i8* %dest, i8* %src, i32 %len) {
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; CHECK: test7
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8* %dest, null
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; CHECK: KEEP1
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%KEEP2 = icmp ne i8* %src, null
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; CHECK: KEEP2
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ret void
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}
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declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i32, i1)
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define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) {
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; CHECK: test8
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call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i32 1, i1 false)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8 addrspace(1) * %dest, null
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; CHECK: KEEP1
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%KEEP2 = icmp ne i8 addrspace(1) * %src, null
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; CHECK: KEEP2
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ret void
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}
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define void @test9(i8* %dest, i8* %src) {
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; CHECK: test9
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 true)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8* %dest, null
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; CHECK: KEEP1
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%KEEP2 = icmp ne i8* %src, null
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; CHECK: KEEP2
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ret void
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}
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