blob: 672bd170a9321a39e0c1aed6686ff4e60caf3f83 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -correlated-propagation -S | FileCheck %s
define void @test1(i8* %ptr) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%A = load i8, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test1_no_null_opt(i8* %ptr) #0 {
; CHECK-LABEL: @test1_no_null_opt(
; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
; CHECK-NEXT: ret void
;
%A = load i8, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test2(i8* %ptr) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
store i8 0, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test2_no_null_opt(i8* %ptr) #0 {
; CHECK-LABEL: @test2_no_null_opt(
; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
; CHECK-NEXT: ret void
;
store i8 0, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test3() {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%ptr = alloca i8
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
;; OK to remove icmp here since ptr is coming from alloca.
define void @test3_no_null_opt() #0 {
; CHECK-LABEL: @test3_no_null_opt(
; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%ptr = alloca i8
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1)
define void @test4(i8* %dest, i8* %src) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
define void @test4_no_null_opt(i8* %dest, i8* %src) #0 {
; CHECK-LABEL: @test4_no_null_opt(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i1)
define void @test5(i8* %dest, i8* %src) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
define void @test5_no_null_opt(i8* %dest, i8* %src) #0 {
; CHECK-LABEL: @test5_no_null_opt(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1)
define void @test6(i8* %dest) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
ret void
}
define void @test6_no_null_opt(i8* %dest) #0 {
; CHECK-LABEL: @test6_no_null_opt(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
ret void
}
define void @test7(i8* %dest, i8* %src, i32 %len) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 [[LEN:%.*]], i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i1 false)
br label %bb
bb:
%KEEP1 = icmp ne i8* %dest, null
%KEEP2 = icmp ne i8* %src, null
ret void
}
declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i1)
define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1)* [[DEST:%.*]], i8 addrspace(1)* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8 addrspace(1)* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8 addrspace(1)* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i1 false)
br label %bb
bb:
%KEEP1 = icmp ne i8 addrspace(1) * %dest, null
%KEEP2 = icmp ne i8 addrspace(1) * %src, null
ret void
}
define void @test9(i8* %dest, i8* %src) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 true)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 true)
br label %bb
bb:
%KEEP1 = icmp ne i8* %dest, null
%KEEP2 = icmp ne i8* %src, null
ret void
}
declare void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
define void @test10(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: call void @test10_helper(i8* nonnull [[ARG1]], i8* [[ARG2:%.*]], i32 [[NON_POINTER_ARG:%.*]])
; CHECK-NEXT: br label [[NULL]]
; CHECK: null:
; CHECK-NEXT: call void @test10_helper(i8* [[ARG1]], i8* [[ARG2]], i32 [[NON_POINTER_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
br label %null
null:
call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
ret void
}
declare void @test11_helper(i8* %arg)
define void @test11(i8* %arg1, i8** %arg2) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: null:
; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = alloca i8, align 1
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
; CHECK-NEXT: call void @test11_helper(i8* nonnull [[MERGED_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
br label %merge
null:
%another_arg = alloca i8
br label %merge
merge:
%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
call void @test11_helper(i8* %merged_arg)
ret void
}
declare void @test12_helper(i8* %arg)
define void @test12(i8* %arg1, i8** %arg2) {
; CHECK-LABEL: @test12(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: null:
; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = load i8*, i8** [[ARG2:%.*]], align 8, !nonnull !0
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
; CHECK-NEXT: call void @test12_helper(i8* nonnull [[MERGED_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
br label %merge
null:
%another_arg = load i8*, i8** %arg2, !nonnull !{}
br label %merge
merge:
%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
call void @test12_helper(i8* %merged_arg)
ret void
}
define i1 @test_store_same_block(i8* %arg) {
; CHECK-LABEL: @test_store_same_block(
; CHECK-NEXT: store i8 0, i8* [[ARG:%.*]], align 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[ARG]], null
; CHECK-NEXT: ret i1 true
;
store i8 0, i8* %arg
%cmp = icmp ne i8* %arg, null
ret i1 %cmp
}
attributes #0 = { null_pointer_is_valid }