0676acb6fd
Should cover most of the tests for GVN, GVNHoist, GVNSink, GlobalOpt, GlobalSplit, InstCombine, Reassociate, SROA and TailCallElim that had not been updated earlier.
88 lines
3.4 KiB
LLVM
88 lines
3.4 KiB
LLVM
; Checks if bitcasted call expression can be evaluated
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; Given call expresion:
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; %struct.Bar* bitcast (%struct.Foo* (%struct.Foo*)* @_ZL3fooP3Foo to %struct.Bar* (%struct.Bar*)*)(%struct.Bar* @gBar)
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; We evaluate call to function @_ZL3fooP3Foo casting both parameter and return value
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; Given call expression:
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; void bitcast (void (%struct.Foo*)* @_ZL3bazP3Foo to void (%struct.Bar*)*)(%struct.Bar* @gBar)
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; We evaluate call to function _ZL3bazP3Foo casting its parameter and check that evaluated value (nullptr)
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; is handled correctly
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; RUN: opt -passes=globalopt,instcombine -S %s -o - | FileCheck %s
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; CHECK: @gBar = local_unnamed_addr global %struct.Bar { i32 2 }
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; CHECK-NEXT: @_s = local_unnamed_addr global %struct.S { i32 1 }, align 4
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; CHECK-NEXT: @llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer
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; CHECK: define i32 @main()
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; CHECK-NEXT: ret i32 0
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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%struct.Bar = type { i32 }
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%struct.S = type { i32 }
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%struct.Foo = type { i32 }
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@gBar = global %struct.Bar zeroinitializer, align 4
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@_s = global %struct.S zeroinitializer, align 4
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_main.cpp, i8* null }]
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define internal void @__cxx_global_var_init() section "__TEXT,__StaticInit,regular,pure_instructions" {
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call void @_ZN1SC1Ev_alias(%struct.S* @_s)
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ret void
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}
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@_ZN1SC1Ev_alias = linkonce_odr unnamed_addr alias void (%struct.S*), void (%struct.S*)* @_ZN1SC1Ev
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define linkonce_odr void @_ZN1SC1Ev(%struct.S*) unnamed_addr align 2 {
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%2 = alloca %struct.S*, align 8
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store %struct.S* %0, %struct.S** %2, align 8
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%3 = load %struct.S*, %struct.S** %2, align 8
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call void @_ZN1SC2Ev(%struct.S* %3)
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ret void
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}
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define i32 @main() {
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%1 = alloca i32, align 4
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store i32 0, i32* %1, align 4
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ret i32 0
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}
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define linkonce_odr void @_ZN1SC2Ev(%struct.S*) unnamed_addr align 2 {
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%2 = alloca %struct.S*, align 8
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store %struct.S* %0, %struct.S** %2, align 8
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%3 = load %struct.S*, %struct.S** %2, align 8
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%4 = getelementptr inbounds %struct.S, %struct.S* %3, i32 0, i32 0
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%5 = call %struct.Bar* bitcast (%struct.Foo* (%struct.Foo*)* @_ZL3fooP3Foo to %struct.Bar* (%struct.Bar*)*)(%struct.Bar* @gBar)
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%6 = getelementptr inbounds %struct.Bar, %struct.Bar* %5, i32 0, i32 0
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%7 = load i32, i32* %6, align 4
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store i32 %7, i32* %4, align 4
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call void bitcast (void (%struct.Foo*)* @_ZL3bazP3Foo to void (%struct.Bar*)*)(%struct.Bar* @gBar)
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ret void
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}
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define internal %struct.Foo* @_ZL3fooP3Foo(%struct.Foo*) {
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%2 = alloca %struct.Foo*, align 8
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store %struct.Foo* %0, %struct.Foo** %2, align 8
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%3 = load %struct.Foo*, %struct.Foo** %2, align 8
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%4 = getelementptr inbounds %struct.Foo, %struct.Foo* %3, i32 0, i32 0
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store i32 1, i32* %4, align 4
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%5 = load %struct.Foo*, %struct.Foo** %2, align 8
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ret %struct.Foo* %5
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}
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define internal void @_ZL3bazP3Foo(%struct.Foo*) {
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%2 = alloca %struct.Foo*, align 8
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store %struct.Foo* %0, %struct.Foo** %2, align 8
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%3 = load %struct.Foo*, %struct.Foo** %2, align 8
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%4 = getelementptr inbounds %struct.Foo, %struct.Foo* %3, i32 0, i32 0
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store i32 2, i32* %4, align 4
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ret void
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}
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; Function Attrs: noinline ssp uwtable
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define internal void @_GLOBAL__sub_I_main.cpp() section "__TEXT,__StaticInit,regular,pure_instructions" {
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call void @__cxx_global_var_init()
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ret void
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}
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