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