optimize-use.ll
1.99 KB
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; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,NOLIMIT
; RUN: opt -memssa-check-limit=0 -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,LIMIT
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,NOLIMIT
; RUN: opt -memssa-check-limit=0 -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,LIMIT
; Function Attrs: ssp uwtable
define i32 @main() {
entry:
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: %call = call noalias i8* @_Znwm(i64 4)
%call = call noalias i8* @_Znwm(i64 4)
%0 = bitcast i8* %call to i32*
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: %call1 = call noalias i8* @_Znwm(i64 4)
%call1 = call noalias i8* @_Znwm(i64 4)
%1 = bitcast i8* %call1 to i32*
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: store i32 5, i32* %0, align 4
store i32 5, i32* %0, align 4
; CHECK: 4 = MemoryDef(3)
; CHECK-NEXT: store i32 7, i32* %1, align 4
store i32 7, i32* %1, align 4
; NOLIMIT: MemoryUse(3) MustAlias
; NOLIMIT-NEXT: %2 = load i32, i32* %0, align 4
; LIMIT: MemoryUse(4) MayAlias
; LIMIT-NEXT: %2 = load i32, i32* %0, align 4
%2 = load i32, i32* %0, align 4
; NOLIMIT: MemoryUse(4) MustAlias
; NOLIMIT-NEXT: %3 = load i32, i32* %1, align 4
; LIMIT: MemoryUse(4) MayAlias
; LIMIT-NEXT: %3 = load i32, i32* %1, align 4
%3 = load i32, i32* %1, align 4
; NOLIMIT: MemoryUse(3) MustAlias
; NOLIMIT-NEXT: %4 = load i32, i32* %0, align 4
; LIMIT: MemoryUse(4) MayAlias
; LIMIT-NEXT: %4 = load i32, i32* %0, align 4
%4 = load i32, i32* %0, align 4
; NOLIMIT: MemoryUse(4) MustAlias
; NOLIMIT-NEXT: %5 = load i32, i32* %1, align 4
; LIMIT: MemoryUse(4) MayAlias
; LIMIT-NEXT: %5 = load i32, i32* %1, align 4
%5 = load i32, i32* %1, align 4
%add = add nsw i32 %3, %5
ret i32 %add
}
declare noalias i8* @_Znwm(i64)