; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S -data-layout="E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" | FileCheck %s -check-prefixes=ALL,CHECK
; RUN: opt < %s -passes=instcombine -S -data-layout="E-p:32:32:32-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" | FileCheck %s -check-prefixes=ALL,P32
; RUN: opt < %s -passes=instcombine -S | FileCheck %s -check-prefixes=ALL,NODL
declare void @use(...)
@int = global i32 zeroinitializer
; Zero byte allocas should be merged if they can't be deleted.
define void @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: [[X:%.*]] = alloca [0 x i32], align 4
; CHECK-NEXT: call void (...) @use(ptr nonnull [[X]])
; CHECK-NEXT: call void (...) @use(ptr nonnull [[X]])
; CHECK-NEXT: call void (...) @use(ptr nonnull [[X]])
; CHECK-NEXT: call void (...) @use(ptr nonnull [[X]])
; CHECK-NEXT: ret void
;
; P32-LABEL: @test(
; P32-NEXT: [[X:%.*]] = alloca [0 x i32], align 4
; P32-NEXT: call void (...) @use(ptr nonnull [[X]])
; P32-NEXT: call void (...) @use(ptr nonnull [[X]])
; P32-NEXT: call void (...) @use(ptr nonnull [[X]])
; P32-NEXT: call void (...) @use(ptr nonnull [[X]])
; P32-NEXT: ret void
;
; NODL-LABEL: @test(
; NODL-NEXT: [[X:%.*]] = alloca [0 x i32], align 8
; NODL-NEXT: call void (...) @use(ptr nonnull [[X]])
; NODL-NEXT: call void (...) @use(ptr nonnull [[X]])
; NODL-NEXT: call void (...) @use(ptr nonnull [[X]])
; NODL-NEXT: call void (...) @use(ptr nonnull [[X]])
; NODL-NEXT: ret void
;
%X = alloca [0 x i32] ; <ptr> [#uses=1]
call void (...) @use( ptr %X )
%Y = alloca i32, i32 0 ; <ptr> [#uses=1]
call void (...) @use( ptr %Y )
%Z = alloca { } ; <ptr> [#uses=1]
call void (...) @use( ptr %Z )
%size = load i32, ptr @int
%A = alloca {{}}, i32 %size
call void (...) @use( ptr %A )
ret void
}
; Zero byte allocas should be deleted.
define void @test2() {
; ALL-LABEL: @test2(
; ALL-NEXT: ret void
;
%A = alloca i32 ; <ptr> [#uses=1]
store i32 123, ptr %A
ret void
}
; Zero byte allocas should be deleted.
define void @test3() {
; ALL-LABEL: @test3(
; ALL-NEXT: ret void
;
%A = alloca { i32 } ; <ptr> [#uses=1]
%B = getelementptr { i32 }, ptr %A, i32 0, i32 0 ; <ptr> [#uses=1]
store i32 123, ptr %B
ret void
}
define ptr @test4(i32 %n) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[N:%.*]] to i64
; CHECK-NEXT: [[A:%.*]] = alloca i32, i64 [[TMP1]], align 4
; CHECK-NEXT: ret ptr [[A]]
;
; P32-LABEL: @test4(
; P32-NEXT: [[A:%.*]] = alloca i32, i32 [[N:%.*]], align 4
; P32-NEXT: ret ptr [[A]]
;
; NODL-LABEL: @test4(
; NODL-NEXT: [[TMP1:%.*]] = zext i32 [[N:%.*]] to i64
; NODL-NEXT: [[A:%.*]] = alloca i32, i64 [[TMP1]], align 4
; NODL-NEXT: ret ptr [[A]]
;
%A = alloca i32, i32 %n
ret ptr %A
}
; Allocas which are only used by GEPs, bitcasts, addrspacecasts, and stores
; (transitively) should be deleted.
define void @test5() {
; ALL-LABEL: @test5(
; ALL-NEXT: entry:
; ALL-NEXT: ret void
;
entry:
%a = alloca { i32 }
%b = alloca ptr
%c = alloca i32
store i32 123, ptr %a
store ptr %a, ptr %b
store i32 123, ptr %b
store atomic i32 2, ptr %a unordered, align 4
store atomic i32 3, ptr %a release, align 4
store atomic i32 4, ptr %a seq_cst, align 4
%c.1 = addrspacecast ptr %c to ptr addrspace(1)
store i32 123, ptr addrspace(1) %c.1
ret void
}
declare void @f(ptr %p)
; Check that we don't delete allocas in some erroneous cases.
define void @test6() {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca { i32 }, align 4
; CHECK-NEXT: [[B:%.*]] = alloca i32, align 4
; CHECK-NEXT: store volatile i32 123, ptr [[A]], align 4
; CHECK-NEXT: tail call void @f(ptr nonnull [[B]])
; CHECK-NEXT: ret void
;
; P32-LABEL: @test6(
; P32-NEXT: entry:
; P32-NEXT: [[A:%.*]] = alloca { i32 }, align 4
; P32-NEXT: [[B:%.*]] = alloca i32, align 4
; P32-NEXT: store volatile i32 123, ptr [[A]], align 4
; P32-NEXT: tail call void @f(ptr nonnull [[B]])
; P32-NEXT: ret void
;
; NODL-LABEL: @test6(
; NODL-NEXT: entry:
; NODL-NEXT: [[A:%.*]] = alloca { i32 }, align 8
; NODL-NEXT: [[B:%.*]] = alloca i32, align 4
; NODL-NEXT: store volatile i32 123, ptr [[A]], align 4
; NODL-NEXT: tail call void @f(ptr nonnull [[B]])
; NODL-NEXT: ret void
;
entry:
%a = alloca { i32 }
%b = alloca i32
store volatile i32 123, ptr %a
tail call void @f(ptr %b)
ret void
}
; PR14371
%opaque_type = type opaque
%real_type = type { { i32, ptr } }
@opaque_global = external constant %opaque_type, align 4
define void @test7() {
; ALL-LABEL: @test7(
; ALL-NEXT: entry:
; ALL-NEXT: ret void
;
entry:
%0 = alloca %real_type, align 4
call void @llvm.memcpy.p0.p0.i32(ptr %0, ptr @opaque_global, i32 8, i1 false)
ret void
}
declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
; Check that the GEP indices use the pointer size, or 64 if unknown
define void @test8() {
; ALL-LABEL: @test8(
; ALL-NEXT: [[X1:%.*]] = alloca [100 x i32], align 4
; ALL-NEXT: call void (...) @use(ptr nonnull [[X1]])
; ALL-NEXT: ret void
;
%x = alloca i32, i32 100
call void (...) @use(ptr %x)
ret void
}
; PR19569
%struct_type = type { i32, i32 }
declare void @test9_aux(ptr inalloca(<{ %struct_type }>))
declare ptr @llvm.stacksave()
declare void @llvm.stackrestore(ptr)
define void @test9(ptr %a) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_TYPE:%.*]] }>, align 1
; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[A:%.*]], align 4
; CHECK-NEXT: store i64 [[TMP0]], ptr [[ARGMEM]], align 4
; CHECK-NEXT: call void @test9_aux(ptr nonnull inalloca(<{ [[STRUCT_TYPE]] }>) [[ARGMEM]])
; CHECK-NEXT: ret void
;
; P32-LABEL: @test9(
; P32-NEXT: entry:
; P32-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_TYPE:%.*]] }>, align 1
; P32-NEXT: [[TMP0:%.*]] = load i64, ptr [[A:%.*]], align 4
; P32-NEXT: store i64 [[TMP0]], ptr [[ARGMEM]], align 4
; P32-NEXT: call void @test9_aux(ptr nonnull inalloca(<{ [[STRUCT_TYPE]] }>) [[ARGMEM]])
; P32-NEXT: ret void
;
; NODL-LABEL: @test9(
; NODL-NEXT: entry:
; NODL-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_TYPE:%.*]] }>, align 8
; NODL-NEXT: [[TMP0:%.*]] = load i64, ptr [[A:%.*]], align 4
; NODL-NEXT: store i64 [[TMP0]], ptr [[ARGMEM]], align 8
; NODL-NEXT: call void @test9_aux(ptr nonnull inalloca(<{ [[STRUCT_TYPE]] }>) [[ARGMEM]])
; NODL-NEXT: ret void
;
entry:
%inalloca.save = call ptr @llvm.stacksave()
%argmem = alloca inalloca <{ %struct_type }>
call void @llvm.memcpy.p0.p0.i32(ptr align 4 %argmem, ptr align 4 %a, i32 8, i1 false)
call void @test9_aux(ptr inalloca(<{ %struct_type }>) %argmem)
call void @llvm.stackrestore(ptr %inalloca.save)
ret void
}
define void @test10() {
; ALL-LABEL: @test10(
; ALL-NEXT: entry:
; ALL-NEXT: [[V32:%.*]] = alloca i1, align 8
; ALL-NEXT: [[V64:%.*]] = alloca i1, align 8
; ALL-NEXT: [[V33:%.*]] = alloca i1, align 8
; ALL-NEXT: call void (...) @use(ptr nonnull [[V32]], ptr nonnull [[V64]], ptr nonnull [[V33]])
; ALL-NEXT: ret void
;
entry:
%v32 = alloca i1, align 8
%v64 = alloca i1, i64 1, align 8
%v33 = alloca i1, i33 1, align 8
call void (...) @use(ptr %v32, ptr %v64, ptr %v33)
ret void
}
define void @test11() {
; ALL-LABEL: @test11(
; ALL-NEXT: entry:
; ALL-NEXT: [[Y:%.*]] = alloca i32, align 4
; ALL-NEXT: call void (...) @use(ptr nonnull @int) [ "blah"(ptr [[Y]]) ]
; ALL-NEXT: ret void
;
entry:
%y = alloca i32
call void (...) @use(ptr nonnull @int) [ "blah"(ptr %y) ]
ret void
}
define void @test_inalloca_with_element_count(ptr %a) {
; ALL-LABEL: @test_inalloca_with_element_count(
; ALL-NEXT: [[ALLOCA1:%.*]] = alloca inalloca [10 x %struct_type], align 4
; ALL-NEXT: call void @test9_aux(ptr nonnull inalloca([[STRUCT_TYPE:%.*]]) [[ALLOCA1]])
; ALL-NEXT: ret void
;
%alloca = alloca inalloca %struct_type, i32 10, align 4
call void @test9_aux(ptr inalloca(%struct_type) %alloca)
ret void
}
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