forked from OSchip/llvm-project
177 lines
4.2 KiB
LLVM
177 lines
4.2 KiB
LLVM
; RUN: opt %s -newgvn -S | FileCheck %s
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
define i8* @test1(i8** %v0, i8** %v1) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V2:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]], align 8, !nonnull !0
|
|
; CHECK-NEXT: store i8* [[V2]], i8** [[V1:%.*]]
|
|
; CHECK-NEXT: ret i8* [[V2]]
|
|
;
|
|
top:
|
|
%v2 = load i8*, i8** %v0, !nonnull !0
|
|
store i8* %v2, i8** %v1
|
|
%v3 = load i8*, i8** %v1
|
|
ret i8* %v3
|
|
}
|
|
|
|
; FIXME: could propagate nonnull to first load?
|
|
define i8* @test2(i8** %v0, i8** %v1) {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V2:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: store i8* [[V2]], i8** [[V1:%.*]]
|
|
; CHECK-NEXT: ret i8* [[V2]]
|
|
;
|
|
top:
|
|
%v2 = load i8*, i8** %v0
|
|
store i8* %v2, i8** %v1
|
|
%v3 = load i8*, i8** %v1, !nonnull !0
|
|
ret i8* %v3
|
|
}
|
|
|
|
declare void @use1(i8* %a) readonly
|
|
|
|
define i8* @test3(i8** %v0) {
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V1:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: call void @use1(i8* [[V1]])
|
|
; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
;
|
|
top:
|
|
%v1 = load i8*, i8** %v0
|
|
call void @use1(i8* %v1)
|
|
br i1 undef, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%v2 = load i8*, i8** %v0, !nonnull !0
|
|
ret i8* %v2
|
|
|
|
bb2:
|
|
%v3 = load i8*, i8** %v0
|
|
ret i8* %v3
|
|
}
|
|
|
|
define i8* @test4(i8** %v0) {
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V1:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: call void @use1(i8* [[V1]])
|
|
; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
;
|
|
top:
|
|
%v1 = load i8*, i8** %v0
|
|
call void @use1(i8* %v1)
|
|
br i1 undef, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%v2 = load i8*, i8** %v0
|
|
ret i8* %v2
|
|
|
|
bb2:
|
|
%v3 = load i8*, i8** %v0, !nonnull !0
|
|
ret i8* %v3
|
|
}
|
|
|
|
define i8* @test5(i8** %v0) {
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V1:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]], align 8, !nonnull !0
|
|
; CHECK-NEXT: call void @use1(i8* [[V1]])
|
|
; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: ret i8* [[V1]]
|
|
;
|
|
top:
|
|
%v1 = load i8*, i8** %v0, !nonnull !0
|
|
call void @use1(i8* %v1)
|
|
br i1 undef, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%v2 = load i8*, i8** %v0
|
|
ret i8* %v2
|
|
|
|
bb2:
|
|
%v3 = load i8*, i8** %v0
|
|
ret i8* %v3
|
|
}
|
|
|
|
define i8* @test6(i8** %v0, i8** %v1) {
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: [[V2:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]], align 8, !nonnull !0
|
|
; CHECK-NEXT: store i8* [[V2]], i8** [[V1:%.*]]
|
|
; CHECK-NEXT: ret i8* [[V2]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: [[V4:%.*]] = load i8*, i8** [[V0]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: store i8* [[V4]], i8** [[V1]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: ret i8* [[V4]]
|
|
;
|
|
top:
|
|
br i1 undef, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%v2 = load i8*, i8** %v0, !nonnull !0
|
|
store i8* %v2, i8** %v1
|
|
%v3 = load i8*, i8** %v1
|
|
ret i8* %v3
|
|
|
|
bb2:
|
|
%v4 = load i8*, i8** %v0
|
|
store i8* %v4, i8** %v1
|
|
%v5 = load i8*, i8** %v1, !nonnull !0
|
|
ret i8* %v5
|
|
}
|
|
|
|
declare void @use2(i8* %a)
|
|
|
|
define i8* @test7(i8** %v0) {
|
|
; CHECK-LABEL: @test7(
|
|
; CHECK-NEXT: top:
|
|
; CHECK-NEXT: [[V1:%.*]] = load i8*, i8** [[V0:%[a-z0-9]+]], align 8, !nonnull !0
|
|
; CHECK-NEXT: call void @use2(i8* [[V1]])
|
|
; CHECK-NEXT: br i1 undef, label [[BB1:%.*]], label [[BB2:%.*]]
|
|
; CHECK: bb1:
|
|
; CHECK-NEXT: [[V2:%.*]] = load i8*, i8** [[V0]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: ret i8* [[V2]]
|
|
; CHECK: bb2:
|
|
; CHECK-NEXT: [[V3:%.*]] = load i8*, i8** [[V0]]
|
|
; CHECK-NOT: !nonnull
|
|
; CHECK-NEXT: ret i8* [[V3]]
|
|
;
|
|
top:
|
|
%v1 = load i8*, i8** %v0, !nonnull !0
|
|
call void @use2(i8* %v1)
|
|
br i1 undef, label %bb1, label %bb2
|
|
|
|
bb1:
|
|
%v2 = load i8*, i8** %v0
|
|
ret i8* %v2
|
|
|
|
bb2:
|
|
%v3 = load i8*, i8** %v0
|
|
ret i8* %v3
|
|
}
|
|
|
|
!0 = !{}
|